公开(公告)号：US11298693B2

公开(公告)日：2022-04-12

申请号：US16446454

申请日：2019-06-19

申请人： PETROCHINA COMPANY LIMITED

发明人： Buwei Yu ,  Tao Jiang ,  Sihan Wang ,  Hongling Chu ,  Yan Jiang ,  Hongliang Huo ,  Xianming Xu ,  Libo Wang ,  Huaiqi Shao ,  Yali Wang ,  Yuanyuan Cao ,  Tong Liu ,  Kecun Ma ,  Fuling Huang ,  Xiuhui Wang ,  Enhao Sun ,  Yulong Wang

IPC分类号： B01J31/18 ,  B01J31/12 ,  B01J31/14 ,  B01J31/34 ,  B01J31/36 ,  B01J31/38 ,  C07C2/32

摘要： The present disclosure provides a method and a catalyst for selective oligomerization of ethylene. The raw material for the catalyst consists of a dehydropyridine annulene-type ligand, a transition metal compound, and an organometallic compound in a molar ratio of 1:0.5-100:0.1-5000. The present disclosure also provides a method for selective oligomerization of ethylene accomplished by using the above-mentioned catalyst. The catalyst for selective oligomerization of ethylene has high catalytic activity, high selectivity for the target products 1-hexene and 1-octene, and low selectivity for 1-butene and 1-C10+.

公开(公告)号：US11352572B2

公开(公告)日：2022-06-07

申请号：US16663128

申请日：2019-10-24

申请人： PETROCHINA COMPANY LIMITED

发明人： Hongling Chu ,  Sihan Wang ,  Kecun Ma ,  Xianming Xu ,  Libo Wang ,  Guizhi Wang ,  Yan Jiang ,  Legang Feng ,  Yulong Wang ,  Enhao Sun ,  Hongliang Huo ,  Tong Liu ,  Yali Wang ,  Xiuhui Wang ,  Han Gao ,  Yuanyuan Cao ,  Fengrong Wang ,  Weihong Guan ,  Ruhai Lin ,  Xuemei Han ,  Yunguang Han ,  Fuling Huang ,  Buwei Yu

IPC分类号： C10G50/02

摘要： The present invention provides a low viscosity poly-α-olefin lubricating oil and a synthesis method thereof. The method comprises: (1) the α-olefin raw material is subjected to dehydration treatment so that the water content in the raw material is ≤10 ppm; (2) a reaction of the dehydration treated α-olefin raw material is carried out in the presence of a complex catalyst and gaseous BF3 to obtain a reaction product, wherein the pressure of the gaseous BF3 is 0.01 to 1 MPa; (3) the reaction product obtained in step (2) is sequentially subjected to flash distillation, gas stripping, centrifugation, and washing treatment to obtain an intermediate product; (4) the intermediate product obtained in step (3) is subjected to distillation under reduced pressure to separate the unreacted α-olefin raw material and α-olefin dimers, and the remaining heavy fractions are subjected to hydrogenation saturation treatment followed by fractionation and cutting-off.