16-05-2019 дата публикации
Номер: US20190144774A1
Автор:
Baumgartner Joseph E.,
Green Thomas E.,
Guzman Javier,
KLIEWER Christine E.,
KOZIOL Lukasz,
LANCI Michael P.,
Mao Kanmi,
Miseo Sabato,
OWENS Tracie,
Schleicher Gary P.,
Soled Stuart L.,
ZHANG LEI
Принадлежит:
Methods are provided for modifying hydrogenation catalysts having silica supports (or other non-alumina supports) with additional alumina, and using such catalysts to achieve unexpectedly superior hydrogenation of feedstocks. The modified hydrogenation catalysts can have a relatively low cracking activity while providing an increased activity for hydrogenation. 112.-. (canceled)13. A hydrogenation catalyst , comprising: 1.0 wt % to 2.5 wt %, based on a total catalyst weight, of alumina deposited on the silica support, the catalyst having a ratio of aluminum atoms in tetrahedral sites to octahedral sites of at least 1.0,', 'wherein the silica support comprises an amorphous silica support, a mesoporous silica support, or a combination thereof., '0.1 wt % to 5.0 wt %, based on total catalyst weight, of a Group VIII noble metal on a silica support; and'}14. The hydrogenation catalyst of claim 13 , wherein the Group VIII noble metal comprises Pt claim 13 , Pd claim 13 , or a combination thereof.15. The hydrogenation catalyst of claim 13 , wherein the Group VIII noble metal comprises Pt.16. The hydrogenation catalyst of claim 15 , wherein the Group VIII noble metal further comprises one or more of Pd claim 15 , Ir claim 15 , or Rh claim 15 , a molar ratio of Pt to the one or more of Pd claim 15 , Ir claim 15 , or Rh being at least 1:1.17. The hydrogenation catalyst of claim 13 , wherein the supported catalyst comprises 0.1 wt % to 2.0 wt % of the Group VIII noble metal.18. The hydrogenation catalyst of claim 13 , wherein the ratio of aluminum atoms in tetrahedral sites to octahedral sites is at least 1.5.19. The hydrogenation catalyst of claim 13 , wherein the catalyst comprises 1.0 wt % to 2.1 wt % of alumina deposited on the silica support.20. The hydrogenation catalyst of claim 13 , wherein the catalyst comprises 1.1 wt % to 2.2 wt % of alumina deposited on the silica support. This application is a continuation-in-part application of co-pending U.S. application Ser. No ...
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