RU2015125559A - Катализатор гидроочистки, содержащий подложку, полученную из алюмогеля, и способ получения такого катализатора - Google Patents

Катализатор гидроочистки, содержащий подложку, полученную из алюмогеля, и способ получения такого катализатора Download PDF

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RU2015125559A
RU2015125559A RU2015125559A RU2015125559A RU2015125559A RU 2015125559 A RU2015125559 A RU 2015125559A RU 2015125559 A RU2015125559 A RU 2015125559A RU 2015125559 A RU2015125559 A RU 2015125559A RU 2015125559 A RU2015125559 A RU 2015125559A
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catalyst
metal
substrate
catalyst according
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RU2663667C2 (ru
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Антуан ДОДЭН
Элоди ДЕВЕР
Марк-Антуан ЛЕЛИА
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Ифп Энержи Нувелль
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Claims (25)

1. Катализатор, содержащий подложку, по меньшей мере один металл, выбранный из группы VIB, и по меньшей мере один металл, выбранный из группы VIII периодической системы элементов, причем содержание металла группы VIB, выраженного на оксиды, составляет от 6 до 25 вес.% от общего веса катализатора, содержание металла группы VIII, выраженное на оксиды, составляет от 0,5 до 7 вес.% от общего веса катализатора, подложка содержит по меньшей мере 90 вес.% оксида алюминия, который получен из размешанного и экструдированного геля бемита, и причем удельная поверхность указанного катализатора составляет от 60 до 250 м2/г.
2. Катализатор по п. 1, причем содержание металла группы VIB, выраженное на оксиды, составляет от 7 до 20 вес.% от общего веса указанного катализатора, а содержание металла группы VIII, выраженное на оксиды, составляет от 0,5 до 5 вес.% от общего веса катализатора.
3. Катализатор по п. 1 или 2, причем подложка из оксида алюминия содержит оксид алюминия в модификации гамма, дельта или тета, по отдельности или в смеси.
4. Катализатор по п. 1 или 2, включающий, дополнительно, фосфор, причем содержание фосфора, выраженное в P2O5, составляет от 1 до 10 вес.% от общего веса катализатора.
5. Катализатор по п. 1 или 2, в котором металл группы VIb выбран из молибдена и вольфрама.
6. Катализатор по п. 1 или 2, в котором металл группы VIII выбран из кобальта и никеля.
7. Катализатор по п. 1 или 2, в котором металл группы VIb является молибденом, а металл группы VIII является кобальтом.
8. Катализатор по п. 7, содержащий, дополнительно, фосфор, для которого плотность молибдена, выраженная в числе атомов молибдена на нм2 катализатора, составляет от 3 до 5, атомное отношение Co/Mo составляет от 0,3 до 0,5, и атомное отношение P/Mo составляет от 0,1 до 0,3.
9. Катализатор по п. 1 или 2, где удельная поверхность катализатора составляет от 60 до 150 м2/г.
10. Катализатор по п. 1 или 2, где удельная поверхность катализатора составляет от 150 до 200 м2/г.
11. Катализатор по п. 1 или 2, где удельная поверхность катализатора составляет от 200 до 250 м2/г.
12. Способ получения катализатора по одному из предыдущих пунктов, включающий следующие стадии, на которых:
a) приводят в контакт водный раствор кислых солей алюминия с щелочным раствором, или водный раствор основных солей алюминия с кислым раствором, не содержащим алюминия, или водный раствор кислых солей алюминия с щелочным раствором солей алюминия, с образованием геля бемита,
b) размешивают указанный гель, полученный на стадии a), в кислой или основной среде, с получением пасты;
c) формуют пасту, полученную на стадии b), с получением подложки в форме экструдата,
d) проводят термообработку подложки из оксида алюминия, полученной на стадии c), чтобы получить удельную поверхность подложки в интервале от 60 до 300 м2/г,
e) пропитывают подложку из оксида алюминия, полученную на стадии d), раствором, содержащим по меньшей мере один предшественник металла, выбранного из группы VIB, и по меньшей мере один предшественник металла, выбранного из группы VIII периодической системы элементов,
f) проводят термообработку указанной подложки, пропитанной металлами на стадии e), чтобы получить удельную поверхность катализатора в интервале от 60 до 250 м2/г.
13. Способ по п. 12, в котором термообработка на стадии d) включает по меньшей мере одну стадию гидротермической обработки и по меньшей мере одну стадию обжига, причем стадию обжига проводят после гидротермической обработки, и гидротермическую обработку осуществляют в камере в присутствии воды при температуре от 100 до 300°C в течение 0,5-8 часов, а стадию обжига осуществляют на воздухе при температуре от 400 до 1500°C в течение 1-8 часов.
14. Способ по п. 13, в котором гидротермическая обработка
включает стадию пропитки подложки водным раствором кислоты до нагревания указанной подложки, пропитанной в камере.
15. Способ по п. 12, в котором термообработка на стадии d) представляет собой только стадию обжига, осуществляемую на воздухе при влагосодержании воздуха от 0 до 50 вес.%, при температуре от 400 до 1500°C в течение 1-8 часов.
16. Способ по одному из пп. 12-15, в котором сушку подложки, полученной на стадии c), проводят перед стадией термообработки d).
17. Способ по п. 12, в котором термическая обработка на стадии f) включает по меньшей мере одну стадию сушки при температуре от 80 до 200°C подложки, пропитанной металлами, за которой необязательно следует стадия обжига при температуре выше 400°C.
18. Способ гидродесульфирования фракции бензина, в котором приводят в контакт водород и указанную фракцию бензина с катализатором по одному из пп. 1-11 или полученным по одному из пп. 12-17, при температуре от 200 до 400°C, полном давлении от 1 до 3 МПа и часовой объемной скорости (VVH) от 1 до 10 час-1.
RU2015125559A 2012-11-29 2013-11-26 Катализатор гидроочистки, содержащий подложку, полученную из алюмогеля, и способ получения такого катализатора RU2663667C2 (ru)

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