CN105967747A - Stable-state Bi4Si3O12 porous material preparation method - Google Patents

Stable-state Bi4Si3O12 porous material preparation method Download PDF

Info

Publication number
CN105967747A
CN105967747A CN201610292778.3A CN201610292778A CN105967747A CN 105967747 A CN105967747 A CN 105967747A CN 201610292778 A CN201610292778 A CN 201610292778A CN 105967747 A CN105967747 A CN 105967747A
Authority
CN
China
Prior art keywords
solution
porous material
citric acid
stable state
preparation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610292778.3A
Other languages
Chinese (zh)
Inventor
伍媛婷
栗梦龙
司楠
王秀峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi University of Science and Technology
Original Assignee
Shaanxi University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaanxi University of Science and Technology filed Critical Shaanxi University of Science and Technology
Priority to CN201610292778.3A priority Critical patent/CN105967747A/en
Publication of CN105967747A publication Critical patent/CN105967747A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/453—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zinc, tin, or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/624—Sol-gel processing
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • C04B2235/483—Si-containing organic compounds, e.g. silicone resins, (poly)silanes, (poly)siloxanes or (poly)silazanes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
    • C04B38/0054—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity the pores being microsized or nanosized

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)

Abstract

The invention discloses a stable-state Bi4Si3O12 porous material preparation method. The method comprises preparing an ammonia-water solution of citric acid, dissolving bismuth oxide in nitric acid, respectively dissolving the bismuth oxide solution and ethyl orthosilicate through the ammonia-water solution of citric acid, adding dispersants such as ethylene diamine tetraacetic acid, citric acid, diethylenetriaminepentacarboxylic acid, tartaric acid, glycol and polyethylene glycol into the mixed solution, preparing xerogel powder suitable for direct pressing molding and carrying out pressing molding and heat treatment to obtain the stable-state Bi4Si3O12 porous material. The preparation method has the characteristics of simple device, short preparation period and low cost.

Description

A kind of stable state B i4Si3O12The preparation method of porous material
Technical field
The invention belongs to field of material technology, particularly to a kind of stable state B i4Si3O12The preparation of porous material Method.
Background technology
Scintillation crystal Bi4Ge3O12Exist in the application expensive, attenuation constant is higher, photoyield relatively High problem, and Bi4Si3O12It is then Bi4Ge3O12Best substitute, it is with low-cost SiO2 Substitute expensive GeO2, greatly reduce cost, and and Bi4Ge3O12Compare, its attenuation constant (100ns) it is only Bi4Ge3O121/3, photoyield is only Bi4Ge3O1220%, and have height Mechanically and chemically stability and the advantage such as the excellent characteristics of luminescence.Porous ceramics is due to the knot of its porous Structure, when hole little and when being evenly distributed, the specific surface area of porous ceramics can be made to substantially increase, increased activity. Compared to porous nano powder body material, owing to the surface scission of link number of nano-powder material is more, specific surface area Increasing, make the most mutually to reunite between nano-particle, nano-particle is the least, then surface activity is the biggest, reunites more Seriously.If the pore in porous material is evenly distributed, then can solve this problem, and maintain higher Specific surface area and surface activity.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of stable state Bi4Si3O12The preparation method of porous material, has that production technology is simple, equipment requirements is simple, the cycle is short Feature.
To achieve these goals, the technical solution used in the present invention is:
A kind of stable state B i4Si3O12The preparation method of porous material, comprises the steps:
(1) citric acid is dissolved in ammonia obtains citric acid solution A, bismuth oxide is dissolved in nitric acid reaction Form solution B；
(2) measure the solution A of 1/2, tetraethyl orthosilicate is dissolved in and wherein forms solution C；By solution B It is dissolved in residue citric acid solution and forms solution D；
(3) dispersant is added in solution D, add solution C and absolute ethyl alcohol and stirring is dissolved, it Rear regulation pH value i.e. obtains colloidal sol E to 1～3；
(4) by colloidal sol E, at 80～85 DEG C, water-bath 1～2h is to gelation, then at 140～160 DEG C It is dried and forms xerogel, carry out ground sieve after naturally drying under room temperature and obtain xerogel powder body；
(5) dry powder after sieving is the most dry-pressing formed, forms block blank of material, finally by bulk base Body material carries out being thermally treated resulting in stable state B i4Si3O12Porous material.
In described step (1), the amount of ammonia is as the criterion can dissolve citric acid, and the amount of nitric acid is with can be the most molten Solution bismuth oxide is as the criterion.
It is (4:3)～(1:1) that the consumption of described tetraethyl orthosilicate and bismuth oxide meets the mol ratio of Bi Yu Si, And the mol ratio of Si ion and Bi ion sum and citric acid is 1:(0.8～1.5).
Described dispersant is by ethylenediaminetetraacetic acid, citric acid, diethylenetriamine pentacarboxylic acid, tartaric acid, second Glycol and Polyethylene Glycol composition.
After described dispersant adds solution D, in dispersant, the concentration range of each component is 0～0.8mol/L.
The volume of described dehydrated alcohol is the 2/3～1 of ammonia volume.
In described step (4), described heat treatment is to carry out burying burning in ZnO powder body, and temperature is 700 DEG C ～800 DEG C.
Compared with prior art, the invention has the beneficial effects as follows: stable state B i that the present invention provides4Si3O12Many In the preparation method of Porous materials, with ethylenediaminetetraacetic acid, citric acid, diethylenetriamine pentacarboxylic acid, winestone Acid, ethylene glycol, PEG400, Macrogol 4000, polyethylene glycol 6000 etc. are straight as dispersant Tap into the gelation process of row complexation foaming, by controlling the concentration of each material, the most each dispersant Consumption, makes the xerogel of applicable straight forming, and this is possible not only to reduce pelletize, old process, Crystallization process also can be made to complete with sintering one step.In conjunction with burying the heat treatment process of burning, utilize organic Bubble and decomposition combustion process form stable state B i4Si3O12Porous material.This method processing step is few, preparation Cycle is short, equipment is simple, low cost, and gained stable state B i4Si3O12The pore-size of porous material and point Cloth controllability is good.
Detailed description of the invention
Embodiments of the present invention are described in detail below in conjunction with embodiment.
Embodiment 1
A kind of stable state B i4Si3O12The preparation method of porous material, comprises the steps:
(1) citric acid is dissolved in ammonia formation citric acid solution A, and the amount of ammonia is can dissolve citric acid It is as the criterion；Bismuth oxide being dissolved in nitric acid reaction and forms solution B, nitric acid is as the criterion can be completely dissolved bismuth oxide.
(2) measure the solution A of 1/2, tetraethyl orthosilicate is dissolved in and wherein forms solution C；By solution B It is dissolved in residue citric acid solution and forms solution D, wherein, Bi:Si (mol ratio)=4:3, Si ion With Bi ion sum: citric acid (mol ratio)=1:0.8.
(3) a certain amount of dispersant is weighed (by ethylenediaminetetraacetic acid, citric acid, diethylenetriamine five carboxylic Acid, tartaric acid, ethylene glycol, Polyethylene Glycol composition, wherein Polyethylene Glycol include again PEG400, Macrogol 4000 and polyethylene glycol 6000, the concentration of dispersant each component controls at 0.8mol/L) add Entering in solution D, (volume of dehydrated alcohol is ammonia volume for addition solution C and absolute ethyl alcohol and stirring dissolving 2/3), afterwards regulation pH value to 1～3 i.e. obtain colloidal sol E.
(4) colloidal sol E water-bath 1～2h at 80 DEG C, to gelation, is then dried at 140 DEG C and is formed Xerogel, by powder body is ground sieve after naturally drying under room temperature.
(5) the direct dry pressing of dry powder after sieving, forms block blank of material, finally by bulk base Body material carries out burying burning in ZnO powder body and i.e. obtains stable state B i4Si3O12Porous material, heat treatment temperature It it is 700 DEG C.Gained stable state B i4Si3O12In porous material, particle size is about 100nm～200nm, Gap a size of 50nm～180nm.
Embodiment 2
A kind of stable state B i4Si3O12The preparation method of porous material, comprises the steps:
(1) citric acid is dissolved in ammonia formation citric acid solution A, and the amount of ammonia is can dissolve citric acid It is as the criterion；Bismuth oxide being dissolved in nitric acid reaction and forms solution B, nitric acid is as the criterion can be completely dissolved bismuth oxide.
(2) measure the solution A of 1/2, tetraethyl orthosilicate is dissolved in and wherein forms solution C；By solution B It is dissolved in residue citric acid solution and forms solution D, wherein, Bi:Si (mol ratio) 1:1, Si ion With Bi ion sum: citric acid (mol ratio)=1:1.5.
(3) a certain amount of dispersant is weighed (by ethylenediaminetetraacetic acid, citric acid, diethylenetriamine five carboxylic Acid, tartaric acid, ethylene glycol, Polyethylene Glycol composition, the concentration of dispersant each component controls at 0.8mol/L.) Add in solution D, add solution C and absolute ethyl alcohol and stirring dissolves (volume of dehydrated alcohol and ammonia body Long-pending equal), regulation pH value i.e. obtains colloidal sol E to 1～3 afterwards.
(4) colloidal sol E water-bath 1～2h at 85 DEG C, to gelation, is then dried shape at 160 DEG C Become xerogel, be ground sieving by powder body after naturally drying under room temperature.
(5) the direct dry pressing of dry powder after sieving, forms block blank of material, finally by bulk base Body material carries out burying burning in ZnO powder body and i.e. obtains stable state B i4Si3O12Porous material, heat treatment temperature It it is 800 DEG C.Gained stable state B i4Si3O12In porous material, particle size is about 100nm～200nm, Gap a size of 50nm～180nm.
Embodiment 3
A kind of stable state B i4Si3O12The preparation method of porous material, comprises the steps:
(1) citric acid is dissolved in ammonia formation citric acid solution A, and the amount of ammonia is can dissolve citric acid It is as the criterion；Bismuth oxide being dissolved in nitric acid reaction and forms solution B, nitric acid is as the criterion can be completely dissolved bismuth oxide.
(2) measure the solution A of 1/2, tetraethyl orthosilicate is dissolved in and wherein forms solution C；By solution B It is dissolved in residue citric acid solution and forms solution D, wherein, Bi:Si (mol ratio)=4:3, Si ion With Bi ion sum: citric acid (mol ratio)=1:1.
(3) a certain amount of dispersant is weighed (by ethylenediaminetetraacetic acid, citric acid, diethylenetriamine five carboxylic Acid, tartaric acid, ethylene glycol, Polyethylene Glycol composition, the concentration of dispersant each component controls 0.01,0.1, 0.1、0.5、0.5、0.8mol/L.) add in solution D, add solution C and absolute ethyl alcohol and stirring is molten Solving (volume of dehydrated alcohol is the 2/3 of ammonia volume), regulation pH value i.e. obtains molten to 1～3 afterwards Glue E.
(4) colloidal sol E water-bath 1～2h at 85 DEG C, to gelation, is then dried at 150 DEG C and is formed Xerogel, by powder body is ground sieve after naturally drying under room temperature.
(5) the direct dry pressing of dry powder after sieving, forms block blank of material, finally by bulk base Body material carries out burying burning in ZnO powder body and i.e. obtains stable state B i4Si3O12Porous material, heat treatment temperature It it is 700 DEG C.Gained stable state B i4Si3O12In porous material, particle size is about 100nm～200nm, Gap a size of 50nm～180nm.

Claims (7)

1. stable state B i4Si3O12The preparation method of porous material, it is characterised in that include walking as follows Rapid:
(1) citric acid is dissolved in ammonia obtains citric acid solution A, bismuth oxide is dissolved in nitric acid reaction Form solution B；
(2) measure the solution A of 1/2, tetraethyl orthosilicate is dissolved in and wherein forms solution C；By solution B It is dissolved in residue citric acid solution and forms solution D；
(3) dispersant is added in solution D, add solution C and absolute ethyl alcohol and stirring is dissolved, it Rear regulation pH value i.e. obtains colloidal sol E to 1～3；
(4) by colloidal sol E, at 80～85 DEG C, water-bath 1～2h is to gelation, then at 140～160 DEG C It is dried and forms xerogel, carry out ground sieve after naturally drying under room temperature and obtain xerogel powder body；
(5) dry powder after sieving is the most dry-pressing formed, forms block blank of material, finally by bulk base Body material carries out being thermally treated resulting in stable state B i4Si3O12Porous material.
Stable state B i the most according to claim 14Si3O12The preparation method of porous material, its feature exists In, in described step (1), the amount of ammonia is as the criterion can dissolve citric acid, and the amount of nitric acid is with can be the most molten Solution bismuth oxide is as the criterion.
Stable state B i the most according to claim 14Si3O12The preparation method of porous material, its feature exists In, it is (4:3)～(1:1) that the consumption of described tetraethyl orthosilicate and bismuth oxide meets the mol ratio of Bi Yu Si, And the mol ratio of Si ion and Bi ion sum and citric acid is 1:(0.8～1.5).
Stable state B i the most according to claim 14Si3O12The preparation method of porous material, its feature exists In, described dispersant is by ethylenediaminetetraacetic acid, citric acid, diethylenetriamine pentacarboxylic acid, tartaric acid, second Glycol and Polyethylene Glycol composition.
Stable state B i the most according to claim 44Si3O12The preparation method of porous material, its feature exists In, after described dispersant adds solution D, in dispersant, the concentration range of each component is 0～0.8mol/L.
Stable state B i the most according to claim 14Si3O12The preparation method of porous material, its feature exists In, the volume of described dehydrated alcohol is the 2/3～1 of ammonia volume.
Stable state B i the most according to claim 14Si3O12The preparation method of porous material, its feature exists In, in described step (4), described heat treatment is to carry out burying burning in ZnO powder body, and temperature is 700 DEG C ～800 DEG C.
CN201610292778.3A 2016-05-05 2016-05-05 Stable-state Bi4Si3O12 porous material preparation method Pending CN105967747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610292778.3A CN105967747A (en) 2016-05-05 2016-05-05 Stable-state Bi4Si3O12 porous material preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610292778.3A CN105967747A (en) 2016-05-05 2016-05-05 Stable-state Bi4Si3O12 porous material preparation method

Publications (1)

Publication Number Publication Date
CN105967747A true CN105967747A (en) 2016-09-28

Family

ID=56991136

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610292778.3A Pending CN105967747A (en) 2016-05-05 2016-05-05 Stable-state Bi4Si3O12 porous material preparation method

Country Status (1)

Country Link
CN (1) CN105967747A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109201035A (en) * 2018-07-18 2019-01-15 周口师范学院 Bi24Ga2O39The preparation method and application of photochemical catalyst
CN110252350A (en) * 2019-06-18 2019-09-20 陕西科技大学 Bi2O2SiO3/Si2Bi24O40The preparation of/BiOBr double heterojunction composite photo-catalyst

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1796552A (en) * 2004-12-29 2006-07-05 华东理工大学 Method for preparing porous material in lumpy in use for biological zymophore
CN101229510A (en) * 2008-01-31 2008-07-30 福州大学 Synthesis and applications of silicate containing Bi
CN101891206A (en) * 2010-07-21 2010-11-24 陕西科技大学 Preparation method of SiO2/TiO2 composite microspheres
CN102275944A (en) * 2011-07-06 2011-12-14 陕西科技大学 Preparation method of new scintillating bismuth silicate powder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1796552A (en) * 2004-12-29 2006-07-05 华东理工大学 Method for preparing porous material in lumpy in use for biological zymophore
CN101229510A (en) * 2008-01-31 2008-07-30 福州大学 Synthesis and applications of silicate containing Bi
CN101891206A (en) * 2010-07-21 2010-11-24 陕西科技大学 Preparation method of SiO2/TiO2 composite microspheres
CN102275944A (en) * 2011-07-06 2011-12-14 陕西科技大学 Preparation method of new scintillating bismuth silicate powder

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
米晓云 等: "《Al2O3纳米粉体及透明陶瓷》", 31 March 2012, 吉林大学出版社 *
衣宝廉: "《燃料电池—原理·技术·应用》", 31 August 2003, 化学工业出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109201035A (en) * 2018-07-18 2019-01-15 周口师范学院 Bi24Ga2O39The preparation method and application of photochemical catalyst
CN110252350A (en) * 2019-06-18 2019-09-20 陕西科技大学 Bi2O2SiO3/Si2Bi24O40The preparation of/BiOBr double heterojunction composite photo-catalyst
CN110252350B (en) * 2019-06-18 2021-09-14 陕西科技大学 Bi2O2SiO3/Si2Bi24O40Preparation of BiOBr double-heterojunction composite photocatalyst

Similar Documents

Publication Publication Date Title
CN105967723A (en) Preparation method of silica porous material
CN104843753A (en) Method for preparing porous spherical high-purity alumina powder
CN105967747A (en) Stable-state Bi4Si3O12 porous material preparation method
CN105330286A (en) Method for preparing nano CaCu3Ti4O12 ceramic material with giant dielectric constant
CN106565242A (en) Method for improving electrical performance of lanthanum-calcium-manganese-oxygen (LCMO) ceramic material
CN111634917A (en) Preparation method of porous active silica gel
CN105948809A (en) Preparation method of porous ZnO block material
CN102276254B (en) Method for modifying barium strontium titanate material through sol-gel doping technology
CN101891210B (en) Preparation method of nano silicon dioxide powder
CN105967749A (en) Preparation method of metastable state Bi2SiO5 porous material
CN104211383B (en) A kind of low-temperature sintering Zn 2siO 4the method of microwave-medium ceramics
CN105967721A (en) Preparation method of Bi2SiO5 porous material
CN105948805A (en) Preparation method of titanium dioxide porous material
CN103342557B (en) Preparation method of microwave dielectric ceramic material
CN105948808A (en) Preparation method of stable Bi12SiO20 nano-porous material
CN105924144A (en) Preparing method for porous metastable stable Bi2SiO5 block
CN105967746A (en) Preparation method of porous Bi2SiO5 block
CN105967745A (en) Preparation method of porous stable state Bi12SiO20 block
CN105964235A (en) Preparation method of porous titanium dioxide-silica block
CN105967724A (en) Preparation method of zinc oxide porous material
CN105948118B (en) A kind of porous Bi4Si3O12The preparation method of bulk
CN105948806A (en) Preparation method of porous steady-state Bi4Si3O12 bulk
CN105967748A (en) Preparation method of BaTiO3 porous material
CN103964822B (en) A kind of sol-gal process that adopts prepares sintering Na-β "-Al 2o 3the method of solid electrolyte precursor
CN102910908A (en) Preparing process of double-perovskite Y2MNCoO6 dielectric ceramic

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20160928