CN108760958A - The light-catalyzed reaction on-line detecting system of self-priming automatic sampling - Google Patents
The light-catalyzed reaction on-line detecting system of self-priming automatic sampling Download PDFInfo
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- CN108760958A CN108760958A CN201810717916.7A CN201810717916A CN108760958A CN 108760958 A CN108760958 A CN 108760958A CN 201810717916 A CN201810717916 A CN 201810717916A CN 108760958 A CN108760958 A CN 108760958A
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- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 82
- 238000005070 sampling Methods 0.000 title claims abstract description 56
- 239000007789 gas Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000010902 straw Substances 0.000 claims abstract description 28
- 239000012159 carrier gas Substances 0.000 claims abstract description 22
- 238000007146 photocatalysis Methods 0.000 claims abstract description 20
- 230000001699 photocatalysis Effects 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 238000013032 photocatalytic reaction Methods 0.000 claims abstract description 9
- 239000012495 reaction gas Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000004817 gas chromatography Methods 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 55
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000004458 analytical method Methods 0.000 abstract description 9
- 239000007795 chemical reaction product Substances 0.000 abstract description 6
- 230000001681 protective effect Effects 0.000 abstract description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 abstract description 2
- 239000002086 nanomaterial Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000012621 metal-organic framework Substances 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 9
- 239000001307 helium Substances 0.000 description 8
- 229910052734 helium Inorganic materials 0.000 description 8
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical group [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 8
- 238000005286 illumination Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 229930040373 Paraformaldehyde Natural products 0.000 description 5
- 229920002866 paraformaldehyde Polymers 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 229960004424 carbon dioxide Drugs 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a kind of light-catalyzed reaction on-line detecting systems of self-priming automatic sampling.The system includes photocatalytic reaction device, gas chromatograph and self-priming sampling device, and self-priming sampling device includes self-straw and the self-priming casing that is sleeved on the self-straw, and carrier gas access port is provided on self-priming casing；One end of self-priming sampling device is connect by self-straw with photocatalytic reaction device, and self-priming casing nozzle is closed at the end；The other end is connected by the injection port of self-priming casing and gas chromatograph, and self-straw nozzle is located in self-priming casing.Light-catalyzed reaction product can be achieved in real time to the injection port automatic sampling of gas chromatograph in the present invention, complete on-line analysis detection, the troublesome operation step for eliminating and repeating to tear open pipeline in the prior art, vacuumize sample introduction, has many advantages, such as efficient, quick, accurate, easy to operate, environmentally protective；Detection is analyzed to the online photocatalysis of the substances such as alkane, formaldehyde suitable for nano material, metal-organic framework material etc..
Description
Technical field
The invention belongs to photocatalysis technology field, it is related to a kind of light-catalyzed reaction that capableing of self-priming automatic sampling and examines online
Examining system.
Background technology
Photocatalysis technology has been widely regarded as a most potential solar utilization technique, and in the energy and environment
There is important application foreground in field.The key of photocatalysis technology functionization is to find efficient, the response of stable and wide spectrum light to urge
Change material.The catalysis material studied at present is various in style, but can meet above-mentioned performance and reach the product of practical demand still
It is few, therefore still need to the research and development of Efforts To Develop novel high-performance catalysis material.
Whether photochemical catalyzing prepares hydrogen and oxygen or photocatalysis degradation organic contaminant, and final product is big
Mostly it is gas, and it is the new and effective photocatalysis material of research to carry out fast and accurately analysis for gas caused by light-catalyzed reaction
The pith of material.The method more to gaseous detection applications is gas chromatography, conventional gas phase chromatography point in conventional analysis
It to be shifted, be enriched with when analysing gaseous sample, the troublesome operation of sample introduction etc., this conventional analysis means are led in gaseous sample
It is readily incorporated external disturbance object when going out, can not accurately carry out quantitative and qualitative analysis.Thus find the detection method being simple and efficient
It is the key that realize that catalysis material is effectively applied, is to realize that photocatalysis technology gradually moves towards practical from the theoretical research in laboratory
The significant process of application.
Invention content
Based on drawbacks described above, the purpose of the present invention is to provide a kind of light-catalyzed reactions for capableing of self-priming automatic sampling to exist
Line detecting system may be implemented to carry out real-time online automatic sampling inspection to the gaseous product of light-catalyzed reaction using the detecting system
It surveys, has the characteristics that efficient, quick, accurate, easy to operate, environmentally protective.
The above-mentioned purpose of the present invention is achieved by the following technical solution：
According to the present invention, the light-catalyzed reaction on-line detecting system of self-priming automatic sampling provided by the invention, including light
Catalyst reaction device and gas chromatograph, which is characterized in that the on-line detecting system further includes self-priming sampling device, it is described from
Suction sampling device includes self-straw and the self-priming casing that is sleeved on the self-straw, and carrier gas access port is provided on self-priming casing,
For being passed through carrier gas；One end of the self-priming sampling device is connect by self-straw with photocatalytic reaction device, at the end
Self-priming casing nozzle is closed；The sample introduction that the other end of the self-priming sampling device passes through self-priming casing and gas chromatograph
Mouth connection, self-straw nozzle are located in self-priming casing.
Advantageous effect：
The light-catalyzed reaction on-line detecting system of the self-priming automatic sampling of the present invention, may be implemented light-catalyzed reaction product
In real time to the injection port automatic sampling of gas chromatograph, complete on-line analysis detection, eliminate repeat to tear open in the prior art pipeline,
The troublesome operation step for vacuumizing sample introduction has many advantages, such as efficient, quick, accurate, easy to operate, environmentally protective.
The light-catalyzed reaction on-line detecting system of the self-priming automatic sampling of the present invention, has suitable for nano material, metal
The online light-catalyzed reaction of machine frame frame material or other catalysis materials to substances such as alkane, alkene, alkynes, formaldehyde, such as
TiO2The light-catalyzed reaction of-Pt PARA FORMALDEHYDE PRILLS(91,95)s carries out on-line analysis detection to reaction product.
Description of the drawings
Fig. 1 is the structural schematic diagram of the light-catalyzed reaction on-line detecting system of the self-priming automatic sampling of the present invention；
Fig. 2 is that 1 light-catalyzed reaction Guan Zhongwei of the embodiment of the present invention is put into TiO2The formaldehyde light-catalyzed reaction chromatogram of material；
Fig. 3 is to be put into TiO in 1 light-catalyzed reaction pipe of the embodiment of the present invention2The formaldehyde light-catalyzed reaction chromatogram of material；
Fig. 4 is that 2 light-catalyzed reaction Guan Zhongwei of the embodiment of the present invention is put into TiO2The formaldehyde light-catalyzed reaction chromatography of-Pt materials
Figure；
Fig. 5 is to be put into TiO in 2 light-catalyzed reaction pipe of the embodiment of the present invention2The formaldehyde light-catalyzed reaction chromatography of-Pt materials
Figure.
Specific implementation mode
Below in conjunction with the accompanying drawings, the light-catalyzed reaction on-line checking system of the self-priming automatic sampling of the present invention is described in detail
System.
Fig. 1 shows the structural schematic diagram of the light-catalyzed reaction on-line detecting system of the self-priming automatic sampling of the present invention.
As shown in Figure 1, the light-catalyzed reaction on-line detecting system of self-priming automatic sampling provided by the invention, including light-catalyzed reaction dress
Set 10 and gas chromatograph 30, which is characterized in that the on-line detecting system further includes self-priming sampling device 20, described self-priming
Sampling device 20 includes self-straw 21 and the self-priming casing 22 being sleeved on the self-straw 21, and being provided with carrier gas on self-priming casing 22 connects
Entrance 23, for being passed through carrier gas；One end of the self-priming sampling device 20 passes through self-straw 21 and photocatalytic reaction device 10
Connection, the nozzle of self-priming casing 22 is closed at the end；The other end of the self-priming sampling device 20 passes through self-priming set
Pipe 22 is connect with the injection port of gas chromatograph 30, and the nozzle of self-straw 21 is located in self-priming casing 22.
In the present invention, photocatalytic reaction device 10 includes light-catalyzed reaction gas inlet pipe 11, light-catalyzed reaction pipe 12
With photocatalysis product efferent duct 15.The inlet of the light-catalyzed reaction pipe 12 is provided with the first valve 13, for controlling reaction
The input of gas；The exit of light-catalyzed reaction pipe 12 is provided with the second valve 14, the output for controlling photocatalysis product；Institute
The first valve 13 and the second valve 14 are stated, such as can be needle valve.The light-catalyzed reaction gas inlet pipe 11 can have one
A entrance can also be converted to 2 or multiple entrances by threeway part.The light-catalyzed reaction pipe 12 can be by quartz material
It is made, the light-catalyzed reaction pipe of arbitrary size is could be provided as according to different demands volume, it is not construed as limiting, for example, can be with
For 1mL, 2mL, 5mL etc..The light-catalyzed reaction gas inlet pipe 11 and catalysate efferent duct 15 can be stainless steel tube,
Such as the stainless steel tube of a diameter of 8mm.
The photocatalytic reaction device 10 further includes support plate 16, is used to support and fixes light-catalyzed reaction pipe 12, is being propped up
Minute surface 17 can be further provided on fagging 16, for the light from light source to be reflected into light-catalyzed reaction pipe 12 again
In, to enhance intensity of illumination, promote light-catalyzed reaction.The support plate 16 can be stainless steel plate, such as thickness can be
3mm。
The self-priming sampling device 20 includes self-straw 21 and the self-priming casing 22 being sleeved on the self-straw 21, self-straw
21 diameter can be 0.5mm~2.0mm, preferably 1.5mm；The diameter of self-priming casing 22 can be 1.0mm~2.5mm, excellent
It is selected as 1.8mm.Self-priming casing 22 grows 1~2mm than self-straw 21, sampling device 20 self-priming in this way by self-priming casing 22 with
The injection port of gas chromatograph 30 connects, and the nozzle of self-straw 21 is located in self-priming casing 22, leads to when by carrier gas access port 23
Enter carrier gas and generate negative pressure under the action of carrier gas, makes light-catalyzed reaction product from light-catalyzed reaction pipe 12 via self-priming sample introduction
Device 20 is flowed into the injection port of gas chromatograph 30, to carry out analysis detection.
The photocatalysis product efferent duct 15 of photocatalytic reaction device 10 can pass through delivery pipe 40 and self-priming sampling device
20 self-straw 21 is connected to, and as needed, valve can be arranged on photocatalysis product efferent duct 15 in order to operate.
The light-catalyzed reaction on-line detecting system of the self-priming automatic sampling of the present invention as needed can also be by gas-chromatography
Instrument 30 is substituted for gas chromatography-mass spectrometry.
In the light-catalyzed reaction on-line detecting system of the self-priming automatic sampling of the application present invention, the first valve 13 is opened
(at this time the second valve 14 close), light-catalyzed reaction gas is input in light-catalyzed reaction pipe 12, when being passed through quantitative reaction gas
After body, the first valve 13 is closed, light-catalyzed reaction is carried out under illumination；When the journey of requirement of experiment is completed or reached in light-catalyzed reaction
After degree, open the second valve 14, while carrier gas is passed through by carrier gas access port 23, the self-straw 21 of self-priming sampling device 20 and from
The negative pressure generated under the action of carrier gas between casing 22 is inhaled, makes light-catalyzed reaction product from light-catalyzed reaction pipe 12 via self-priming
Formula sampling device 20 is flowed into the injection port of gas chromatograph 30, carries out analysis detection.
Application Example 1
Study TiO2The photocatalysis of material PARA FORMALDEHYDE PRILLS(91,95)
Using the light-catalyzed reaction on-line detecting system of self-priming automatic sampling shown in FIG. 1, illumination (external light source,
It is not shown in figure) in the case of, study TiO2The photocatalysis of material PARA FORMALDEHYDE PRILLS(91,95).
Material, instrument, condition
TiO2Material：Shanghai Aladdin biochemical technology limited liability company buys, and 99.8%metals basis, 10nm~
25nm；
Pure air：+ 79% nitrogen of 21% oxygen；
50ppm formaldehyde gas (Balance Air is helium)；
Shimadzu 2014C type gas chromatographs；
TCD detectors；
Carrier gas：Helium；
Injector temperature：110℃；
Post case temperature：110℃；
Detector temperature：150℃；
TDX-01 packed columns (column length 1m, internal diameter 3.00mm, bought by Shimadzu Corporation)；
Flow rate of carrier gas：50ml/min；
Bridge stream：150mA；
Light source：Microsolar300 high performance analog daylight xenon source (Beijing Bo Feilai companies buy).
Using light-catalyzed reaction on-line detecting system (the light-catalyzed reaction pipe at this time of self-priming automatic sampling shown in FIG. 1
TiO is not put into 122Material), the first valve 13 (the second valve 14 is closed at this time) is opened, is passed through 1：The pure sky of 1 volume ratio
Gas and formaldehyde gas (50ppm formaldehyde gas, helium is as balanced gas), after being passed through quantitative reaction gas, closing the
One valve 13 carries out light-catalyzed reaction 10min under illumination, open the second valve 14, while being passed through carrier gas by carrier gas access port 23,
The negative pressure generated under the action of carrier gas between the self-straw 21 and self-priming casing 22 of self-priming sampling device 20, keeps photocatalysis anti-
It answers product to be flowed into the injection port of gas chromatograph 30 via self-priming sampling device 20 from light-catalyzed reaction pipe 12, is analyzed
Detection.Its chromatogram is as shown in Figure 2, it can be seen that in TDX-01 chromatographic columns, air is unable to get with formaldehyde and efficiently separates, institute
It is unimodal to show as mixing in chromatogram Fig. 2；Baseline fluctuation before air+formaldehyde peak is due to balanced gas in sample gas
Caused by helium.
It is put into TiO in light-catalyzed reaction pipe 122Material, repeats above-mentioned experiment, and chromatogram is as shown in Figure 3.
Compare Fig. 2, Fig. 3 it can be found that TiO2Formaldehyde catalytic degradation is become two by material under air environment under light illumination
Carbonoxide and water (H2O is in TCD detectors without response).
Application Example 2
Study TiO2The photocatalysis of-Pt material PARA FORMALDEHYDE PRILLS(91,95)s
Using the light-catalyzed reaction on-line detecting system of self-priming automatic sampling shown in FIG. 1, illumination (external light source,
It is not shown in figure) in the case of, study TiO2The photocatalysis of-Pt material PARA FORMALDEHYDE PRILLS(91,95)s.
Material, instrument, condition
TiO2- Pt materials；
Pure air：+ 79% nitrogen of 21% oxygen；
50ppm formaldehyde gas (Balance Air is helium)；
Shimadzu 2014C type gas chromatographs；
TCD detectors；
Carrier gas：Helium；
Injector temperature：110℃；
Post case temperature：110℃；
Detector temperature：150℃；
TDX-01 packed columns (column length 1m, internal diameter 3.00mm, bought by Shimadzu Corporation)；
Flow rate of carrier gas：50ml/min；
Bridge stream：150mA；
Light source：Microsolar300 high performance analog daylight xenon source (Beijing Bo Feilai companies buy).
Using light-catalyzed reaction on-line detecting system (the light-catalyzed reaction pipe at this time of self-priming automatic sampling shown in FIG. 1
TiO is not put into 122- Pt materials), the first valve 13 (the second valve 14 is closed at this time) is opened, is passed through 1：1 volume ratio it is pure
Air and formaldehyde gas (50ppm formaldehyde gas, helium is as balanced gas) are closed after being passed through quantitative reaction gas
First valve 13 carries out light-catalyzed reaction 10min under illumination, open the second valve 14, while being passed through load by carrier gas access port 23
Gas, the negative pressure generated under the action of carrier gas between the self-straw 21 and self-priming casing 22 of self-priming sampling device 20, makes light urge
Change the injection port that reaction product is flowed into gas chromatograph 30 from light-catalyzed reaction pipe 12 via self-priming sampling device 20, carries out
Analysis detection.As shown in fig. 4, it can be seen that in TDX-01 chromatographic columns, air is unable to get with formaldehyde effectively to be divided its chromatogram
From so showing as mixing in chromatogram Fig. 4 unimodal；Baseline fluctuation before air+formaldehyde peak is due to being put down in sample gas
Caused by weighing apparatus gas helium.
It is put into TiO in light-catalyzed reaction pipe 122- Pt materials, repeat above-mentioned experiment, and chromatogram is as shown in Figure 5.
Compare Fig. 4, Fig. 5 it can be found that TiO2- Pt materials under light illumination become formaldehyde catalytic degradation under air environment
Carbon dioxide and water (H2O is in TCD detectors without response).
And compare Fig. 3, Fig. 5 it can be found that having loaded the TiO of Pt2Material light catalysis property is more excellent.
Claims (10)
1. a kind of light-catalyzed reaction on-line detecting system of self-priming automatic sampling, including photocatalytic reaction device and gas-chromatography
Instrument, which is characterized in that the on-line detecting system further includes self-priming sampling device, and the self-priming sampling device includes self-priming
The self-priming casing on the self-straw is managed and be sleeved on, carrier gas access port is provided on self-priming casing, for being passed through carrier gas；It is described from
One end of suction sampling device is connect by self-straw with photocatalytic reaction device, and self-priming casing nozzle is closing at the end
's；The other end of the self-priming sampling device is connected by the injection port of self-priming casing and gas chromatograph, self-straw nozzle
In self-priming casing.
2. the light-catalyzed reaction on-line detecting system of self-priming automatic sampling as described in claim 1, which is characterized in that described
Self-priming casing grows 1~2mm than the self-straw.
3. the light-catalyzed reaction on-line detecting system of self-priming automatic sampling as claimed in claim 2, which is characterized in that described
A diameter of 0.5mm~2.0mm of self-straw, a diameter of 1.0mm~2.5mm of the self-priming casing.
4. the light-catalyzed reaction on-line detecting system of self-priming automatic sampling as claimed in claim 3, which is characterized in that described
A diameter of 1.5mm of self-straw, a diameter of 1.8mm of the self-priming casing.
5. the light-catalyzed reaction on-line detecting system of self-priming automatic sampling as described in claim 1, which is characterized in that light is urged
It includes light-catalyzed reaction gas inlet pipe, light-catalyzed reaction pipe and photocatalysis product efferent duct, the photocatalysis to change reaction unit
The inlet of reaction tube is provided with the first valve, the input for controlling reaction gas；The exit of light-catalyzed reaction pipe is arranged
There is the second valve, the output for controlling photocatalysis product.
6. the light-catalyzed reaction on-line detecting system of self-priming automatic sampling as claimed in claim 5, which is characterized in that light is urged
It further includes support plate to change reaction unit, is used to support and fixes the light-catalyzed reaction pipe.
7. the light-catalyzed reaction on-line detecting system of self-priming automatic sampling as claimed in claim 6, which is characterized in that in institute
It states and is provided with minute surface in support plate.
8. the light-catalyzed reaction on-line detecting system of self-priming automatic sampling as claimed in claim 5, which is characterized in that light is urged
The photocatalysis product efferent duct for changing reaction unit is connected to by delivery pipe with the self-straw of self-priming sampling device.
9. the light-catalyzed reaction on-line detecting system of self-priming automatic sampling as claimed in claim 5, which is characterized in that described
Light-catalyzed reaction gas inlet pipe and catalysate efferent duct are stainless steel tube, the entrance of the light-catalyzed reaction gas inlet pipe
2 or multiple entrances are converted to for an entrance or by threeway part.
10. such as the light-catalyzed reaction on-line detecting system of the self-priming automatic sampling of claim 5-9 any one of them, feature
It is, the light-catalyzed reaction pipe is made of quartz material, volume 1mL, 2mL or 5mL.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095544A (en) * | 2019-05-20 | 2019-08-06 | 西安交通大学 | A kind of experimental system and method for photocatalysis carbon dioxide methanol |
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