Chromium complexes of three new ligands, Ph2PN(Me)(CH2)2-X [X = NMe2(PNN); PPh2 (PNP); Py (PNPy)], have been examined vis-à-vis their ability to promote ethylenetetramerization, (PNN)CrCl3(L) [L = THF (1); CH3CN (2)], (PNPy)CrCl3(L) [L = THF (3); CH3CN (4)], and (PNP)CrCl3(THF) (5). In the case of 2 and 4, it was possible to grow crystals suitable for X-ray diffraction. The reaction of 3 with Et3Al
PRODUCTION OF OLEFINS FROM A METHANE CONVERSION PROCESS
申请人:UOP LLC
公开号:US20150073183A1
公开(公告)日:2015-03-12
Methods and systems are provided for converting methane in a feed stream to acetylene. The method includes the further conversion of the acetylene to a hydrocarbon stream having propylene. The hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream is treated to convert acetylene to another hydrocarbon, and in particular olefins. The method according to certain aspects includes controlling the level of contaminants in the hydrocarbon stream.
The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
本发明涉及使用催化剂体系将烯烃(如乙烯)低聚为高碳烯烃(如 1-己烯和 1-辛烯的混合物),该催化剂体系包括 a) 铬源 b) 一种或多种活化剂和 c) 含磷环连接化合物。此外,本发明还涉及一种含磷环的连接化合物和制造所述化合物的工艺。
Phosphacycle compound and process for production thereof
申请人:Dow Global Technologies LLC
公开号:US10357764B2
公开(公告)日:2019-07-23
The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
本发明涉及使用催化剂体系将烯烃(如乙烯)低聚为高碳烯烃(如 1-己烯和 1-辛烯的混合物),该催化剂体系包括 a) 铬源 b) 一种或多种活化剂和 c) 含磷环连接化合物。此外,本发明还涉及一种含磷环的连接化合物和制造所述化合物的工艺。
Process for oligomerization
申请人:Dow Global Technologies LLC
公开号:US10376869B2
公开(公告)日:2019-08-13
The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
本发明涉及使用催化剂体系将烯烃(如乙烯)低聚为高碳烯烃(如 1-己烯和 1-辛烯的混合物),该催化剂体系包括 a) 铬源 b) 一种或多种活化剂和 c) 含磷环连接化合物。此外,本发明还涉及一种含磷环的连接化合物和制造所述化合物的工艺。