SU1347971A1 - Catalyst for incomplete oxidation of propane - Google Patents
Catalyst for incomplete oxidation of propane Download PDFInfo
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- SU1347971A1 SU1347971A1 SU864078602A SU4078602A SU1347971A1 SU 1347971 A1 SU1347971 A1 SU 1347971A1 SU 864078602 A SU864078602 A SU 864078602A SU 4078602 A SU4078602 A SU 4078602A SU 1347971 A1 SU1347971 A1 SU 1347971A1
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- SU
- USSR - Soviet Union
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- propane
- catalyst
- selectivity
- acrolein
- phosphorus oxide
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Изобретение относитс к каталитической химии, в частности к катализатору (КТ) дл неполного окислени пропана. С целью повышени селективности КТ по акролеину он имеет следующий состав компонентов, мас.%: оксид фосфора 0,23-0,27; диоксид кремни остальное. КТ позвол ет получить акролеин с селективностью до 92%, что на 10% выше при использовании известного КТ. 1 табл. со 4 ч :о This invention relates to catalytic chemistry, in particular to a catalyst (QD) for the partial oxidation of propane. In order to increase the selectivity of QD for acrolein, it has the following composition, wt%: phosphorus oxide 0.23-0.27; silica the rest. CT allows to obtain acrolein with selectivity up to 92%, which is 10% higher when using known CT. 1 tab. from 4 hours: about
Description
г1r1
Изобретение относитс к катализаторам дл окислени низших предельных углеводородов, в частности пропана , до карбонилсодержащих соединенийThe invention relates to catalysts for the oxidation of lower saturated hydrocarbons, in particular propane, to carbonyl-containing compounds.
Целью изобретени вл етс повышение селективности катализатора по акролеину за счет дополнительного содержани оксида фосфора при определенном соотношении компонентов.The aim of the invention is to increase the selectivity of the catalyst for acrolein due to the additional content of phosphorus oxide at a certain ratio of components.
Пример 1. 100 см (67,4 г) диоксида кремни в виде силикагел марки КСК-2,5 с удельной поверхностью 275 и средним диаметром частиц 1,8 мм заливают водным раствором двузамещенного фосфата аммони (NH)2HPO (0,344 г в 290 см дистиллированной воды) и упаривают на вод ной бане при посто нном перемешивании , далее катализатор сушат при и прокаливают в муфельной печи при 600j-10°C 4 ч. В результате прокалки происходит разложение двузамещенного фосфата аммони с образованием оксидов фосфора и выделением в газообразную фазу паров аммиака и воды. Готовый катализатор содержит 99,75 мае.% диоксида кремни и 0,25 мас.% оксида фосфора.Example 1. 100 cm (67.4 g) of silica in the form of KSK-2.5 silica gel with a specific surface of 275 and an average particle diameter of 1.8 mm are poured with an aqueous solution of disubstituted ammonium phosphate (NH) 2HPO (0.344 g in 290 cm distilled water) and evaporated in a water bath with constant stirring, then the catalyst is dried at and calcined in a muffle furnace at 600 j-10 ° C for 4 hours. As a result of calcination, the disubstituted ammonium phosphate decomposes to form phosphorus oxides and vapor is released into the gaseous phase ammonia and water. The finished catalyst contains 99.75 wt.% Of silicon dioxide and 0.25 wt.% Of phosphorus oxide.
Пропан технический окисл ют кислородом воздуха на установке проточного типа с неподвижным слоем катализатора . Содержание пропана в пропано- воздушной смеси 10 об.% ( верхнего предела взрываемости). Подачу исходньк компонентов (пропана и воздуха ) осуществл ют раздельно, приTechnical grade propane is oxidized with atmospheric oxygen in a fixed-bed flow-through installation. The propane content in propane-air mixture is 10 vol.% (Upper explosive limit). The feed of the initial components (propane and air) is carried out separately, with
347971347971
зтом пропан поступает непосредственно на.слой катализатора через специальный распределитель. За слоем катализатора образовавшиес продукты подвергают быстрому охлаждению в двухсекционном холодильнике. Процесс провод т при 590-600 С и объемной скорости 2000 чHere propane is fed directly to the catalyst bed through a special distributor. After the catalyst bed, the products formed are subjected to rapid cooling in a two-compartment refrigerator. The process is carried out at 590-600 ° C and a space velocity of 2000 hours.
Селективность по акролеину в конденсате составл ет 92,0%. Выход суммы карбонилсодержащих соединений составл ет 350 г с 1 м пропущенного пропана.The selectivity to acrolein in the condensate is 92.0%. The yield of the amount of carbonyl-containing compounds is 350 g with 1 m of missed propane.
В таблице представлены данные по активности и селективности образцов катализаторов с различным содержанием оксида фосфора.The table presents data on the activity and selectivity of samples of catalysts with different contents of phosphorus oxide.
Как видно из представленных данных, предлагаемый катализатор позвол ет получать целевой продукт - акролеин, с высокой селективностью до 92%, что на 10% вьше, чем в прототипе.As can be seen from the presented data, the proposed catalyst allows to obtain the target product - acrolein, with high selectivity up to 92%, which is 10% higher than in the prototype.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864078602A SU1347971A1 (en) | 1986-06-16 | 1986-06-16 | Catalyst for incomplete oxidation of propane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864078602A SU1347971A1 (en) | 1986-06-16 | 1986-06-16 | Catalyst for incomplete oxidation of propane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1347971A1 true SU1347971A1 (en) | 1987-10-30 |
Family
ID=21241791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU864078602A SU1347971A1 (en) | 1986-06-16 | 1986-06-16 | Catalyst for incomplete oxidation of propane |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1347971A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4142898A1 (en) * | 1991-12-23 | 1993-06-24 | Sued Chemie Ag | Pyrogenic silica moulding used as catalyst support or catalyst - prepd. from paste in aq. alcoholic ammonia by moulding, drying and calcining |
| DE4142902A1 (en) * | 1991-12-23 | 1993-06-24 | Sued Chemie Ag | Producing mouldings for catalytic use from pyrogenic silicic acid - by hydrothermally treating initially moulded body with ammonia contg. solution |
-
1986
- 1986-06-16 SU SU864078602A patent/SU1347971A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР 833297, кл. В 01 J 23/28, 1979. Авторское свидетельство СССР 1115794, кл. В 01 J 23/31, 1982. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4142898A1 (en) * | 1991-12-23 | 1993-06-24 | Sued Chemie Ag | Pyrogenic silica moulding used as catalyst support or catalyst - prepd. from paste in aq. alcoholic ammonia by moulding, drying and calcining |
| DE4142902A1 (en) * | 1991-12-23 | 1993-06-24 | Sued Chemie Ag | Producing mouldings for catalytic use from pyrogenic silicic acid - by hydrothermally treating initially moulded body with ammonia contg. solution |
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