SU493241A1 - Ammonia synthesis catalyst - Google Patents

Ammonia synthesis catalyst

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Publication number
SU493241A1
SU493241A1 SU1943286A SU1943286A SU493241A1 SU 493241 A1 SU493241 A1 SU 493241A1 SU 1943286 A SU1943286 A SU 1943286A SU 1943286 A SU1943286 A SU 1943286A SU 493241 A1 SU493241 A1 SU 493241A1
Authority
SU
USSR - Soviet Union
Prior art keywords
catalyst
increase
activity
nickel
ammonia
Prior art date
Application number
SU1943286A
Other languages
Russian (ru)
Inventor
Виктор Эммануилович Вассерберг
Алла Владимировна Крылова
Гайрат Кабилович Султанбеков
Чыонг Занг Чинь
Серафим Степанович Лачинов
Николай Семенович Торочешнков
Original Assignee
Московский Ордена Ленина И Ордена Трудового Красного Знамени Химикотехнологический Институт Им.Д.И.Менделеева
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Application filed by Московский Ордена Ленина И Ордена Трудового Красного Знамени Химикотехнологический Институт Им.Д.И.Менделеева filed Critical Московский Ордена Ленина И Ордена Трудового Красного Знамени Химикотехнологический Институт Им.Д.И.Менделеева
Priority to SU1943286A priority Critical patent/SU493241A1/en
Application granted granted Critical
Publication of SU493241A1 publication Critical patent/SU493241A1/en

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Description

(54) КАТАЛИЗАТОР ДЛЯ СИНТЕЗА АММИАКА(54) CATALYST FOR AMMONIA SYNTHESIS

лированой воды; 5,6 г А1(НОз)з-9Н2О раствор ют 3 51 мл дистиллированной воды. Концентраци  NHiOH- 10%.molded water; 5.6 g of A1 (NO3) 3 -9H2O dissolve 3 51 ml of distilled water. The concentration of NHiOH is 10%.

Осал дение цровод т нри носто нном перемешивании смеси, црн комнатной темцературе и конечном рН 9. Осадки промывают дистиллированной водой до удалени . МОз, фильтруют, иосле чего осадок перенос т в чашку, где ири посто нном перемешивании добавл ют раствор Са{СНзСОО)2, раствор ют в дистиллированной воде в количестве, необходимом дл  полного растворени  навески.The sedimentation is carried out by stirring the mixture at random with stirring, at ambient temperature and final pH 9. The precipitates are washed with distilled water until they are removed. The SO3 is filtered, and then the precipitate is transferred to a cup, where a solution of Ca {CH3SOO) 2 is added to the cup under constant stirring, dissolved in distilled water in the amount necessary to completely dissolve the sample.

Затем катализатор формуют, подсушивают при комнатной температуре на воздухе 24 час, потом нри 50°С 8 час. После этого катализатор сушат в сушильном шкафу при 140°С в течение 6 час и прокаливают при 600°С.Then the catalyst is molded, dried at room temperature in air for 24 hours, then at 50 ° C for 8 hours. After that, the catalyst is dried in a drying cabinet at 140 ° C for 6 hours and calcined at 600 ° C.

Полученный катализатор пропитывают водным раствором (СНзСОО) г (дл  5 г катализатора 0,1 г Ni(CH3COO)2, раствор ют в 3 мл The resulting catalyst is impregnated with an aqueous solution of (CH 2 COO) g (for 5 g of catalyst, 0.1 g of Ni (CH3COO) 2, dissolved in 3 ml

.000 час- На: .000 hour- On:

(истиллированной воды), сушат и прокаливаэт при температуре 500°С в течение 4 час, 1ропитывают спиртовым раствором КОН (дл  i,OI28 г катализатора 0,018 г КОН раствор эт в 3 мл абсолютного спирта), после чего ;ушат и прокаливают при 140°С в течение час.(istilirovannogo water), dried and calcined at a temperature of 500 ° C for 4 hours, impregnated with an alcoholic solution of KOH (for i, OI28 g catalyst 0,018 g KOH solution in 3 ml of absolute alcohol), then; tub and calcined at 140 ° C for an hour.

Катализатор в окисленном состо нии имеет ледующий химический состав, вес. %:The catalyst in the oxidized state has the following chemical composition, weight. %:

РезОReso

97 1,5 97 1.5

АЬОз 0,5 СаО 0,3 HAO3 0.5 CaO 0.3

К20K20

NiO 0,8NiO 0.8

В табл. 1 приведены значени  выхода амшака при давлении 50 и 100 ат и объемной .корости ( 15000 час на предлагаемом :атализаторе (образец I) по сравнению с изестным промышленным катализатором СА-1.In tab. Figure 1 shows the values of the output of the Amshak at a pressure of 50 and 100 atm and a volumetric rate (15,000 hours on the proposed: analyzer (sample I) as compared with the conventional industrial catalyst CA-1.

Таблица 1Table 1

Пример 2. Катализатор получают способом , описанным в примере 1, до стадии внесени  добавки никел . Вместо пропитки катализатора раствором соли никел  на катализатор адсорбируют карбоиил никел  из газовой фазы. Нанесение карбонила провод т в вакуумной установке при температуре испареии  Ni(CO)4 -25°С и температуре катализатора -10°С. Адсорбированный на катализаторе карбонил никел  разлагают в присутствии кислорода.Example 2. A catalyst is prepared in the manner described in Example 1, prior to the nickel addition step. Instead of impregnating the catalyst with a nickel salt solution, carbonic nickel is adsorbed onto the catalyst from the gas phase. Carbonyl deposition is carried out in a vacuum unit at an Ni (CO) 4 evaporation temperature of -25 ° C and a catalyst temperature of -10 ° C. The carbonyl nickel adsorbed on the catalyst is decomposed in the presence of oxygen.

После нанесени  добавки никел  образец пропитывают спиртовым раствором КОН (см. пример I), сушат и прокаливают при температуре 140°С в течение 4 час. Катализатор в окисленном состо нии имеет следующий химический состав, вес. %:After application of the nickel additive, the sample is impregnated with an alcoholic KOH solution (see Example I), dried and calcined at 140 ° C for 4 hours. The catalyst in the oxidized state has the following chemical composition, weight. %:

бразец 2 Ре2Оз scrubber 2 Fe2Oz

96 1,0 АЬОз СаО 0,5 96 1.0 Aloz Cao 0.5

К20 0,3K20 0.3

NiONio

2,152.15

бразец 3 Ре2Оз Sample 3 Fe2Oz

97 1,0 АЬОз СаО 0,597 1.0 ALOZ CaO 0.5

К20K20

0,30.3

NiONio

1,41.4

В табл. 2 сопоставлена активность образцов 25 1иЗиСА-1.In tab. 2 compared the activity of samples 25 1SiSA-1.

Таблица 2table 2

.000 час- На: , ат.000 hour- At:, am

Выход аммиака, %, в зависимости от температуры, °СThe output of ammonia,%, depending on temperature, ° C

Claims (1)

Увеличение активности при введении доба1 ок никел  при относительно низких темпе атурах представл ет интерес в св зи с поI сками низкотемпературных катализаторов с ннтеза аммиака. Повышение активности до ( гигаетс  за счет повышени  удельной активI ости, поскольку поверхность образцов с ; обавкой никел  и без добавки никел , при5 готовленных одним и тем же способом, одинакова . Формула изобретени  Катализатор дл  синтеза аммиака на осно-5 ве FegOs, промотированный окислами АЬОз, К2О и СаО, отличающийс  тем, что, с целью повышени  активности катализатора, б он дополнительносодержит NiO при следующем соотношении компонентов, вес. %: p Q Основа АЬОз1-3 К2О0,2-0,7 СаО0,3-2 NiO0,3-3The increase in activity with the introduction of additional nickel at relatively low rates of aturah is of interest in connection with the methods of low-temperature catalysts with ammonia. The increase in activity is up to (gigantic due to an increase in specific activity, since the surface of the samples with; nickel addition and without nickel added prepared using the same method is the same. Formula of the invention for the synthesis of ammonia based on FegOs oxides , K2O and CaO, characterized in that, in order to increase the activity of the catalyst, it would additionally contain NiO in the following ratio of components, wt.%: P Q Base ABO3-3-3 K2O0.2-0.7 CaO0.3-2 NiO0.3 -3
SU1943286A 1973-07-02 1973-07-02 Ammonia synthesis catalyst SU493241A1 (en)

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