China Petroleum & Chemical Corporation

Shanghai Research Institute of Petrochemical Technology, Sinopec

Shufang Ji

Huanxin Gao

Bin Zhou

Hua Fang

Yilun Wei

Ruifang Gu

Hui Yao

Hongyuan Zong

A method for producing isopropyl benzene includes the following steps. Step A: feeding a first stream containing benzene and a first stream containing propylene into a first reaction zone to contact a first catalyst for alkylation, and obtaining a first stream containing isopropyl benzene from the first reaction zone, dividing the first stream containing isopropyl benzene into a stream Ia and a stream IIa, the stream Ia circulating back into the first reaction zone and the stream IIa entering into a second reaction zone, having the stream entering the second reaction zone to contact a second catalyst for alkylation, and obtaining a second stream containing isopropyl benzene from the second reaction zone, and purifying at least a partial stream IIIa of the second stream containing isopropyl benzene, and obtaining a product isopropyl benzene.

Method for producing isopropyl benzene from benzene and propylene

A process of producing isopropyl benzene which solves the problem of high amount of n-propyl benzene according to the prior art. The process separates the polyisopropyl benzene through a suitable rectification into two streams of relatively lighter and heavier components, wherein the content of diisopropylbenzene in the stream of relatively lighter components is controlled to be at least greater than 95 wt %, and the content of tri-isopropyl benzene in the stream of relatively heavier components is controlled to be at least greater than 0.5 wt %. Such a technical solution subjecting the two streams respectively to the transalkylation solves the problem raised from the prior art, and is useful for the industrial production of isopropyl benzene.

Process for producing cumene

The present invention relates to an organosilicon porous zeolite, preparation of the same, and use of the same. The organosilicon porous zeolite of the invention has the following composition on molar basis: (1/n)AlO:SiO:mR:xM, wherein n=5 to 1000, m=0.001 to 1, x=0.005 to 2, R is at least one selected from the group consisting of alkyl, alkenyl and phenyl and connected to a silicon atom in the framework of the zeolite, and M is an organic amine templating agent, wherein a solid SiNMR spectrum of the zeolite has at least one Sinuclear magnetic resonance peak in the range of from &#x2212;80 to +50 ppm, and wherein a X-ray diffraction pattern of the zeolite exhibits diffraction peaks corresponding to d-spacing of 12.4&#xb1;0.2, 11.0&#xb1;0.3, 9.3&#xb1;0.3, 6.8&#xb1;0.2, 6.1&#xb1;0.2, 5.5&#xb1;0.2, 4.4&#xb1;0.2, 4.0&#xb1;0.2 and 3.4&#xb1;0.1 &#x212b;. The porous zeolite can be used as an adsorbent or as a component of a catalyst for the conversion of an organic compound.

Porous zeolite of organosilicon, a method for preparing the same and the use of the same

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Shanghai, China

Shufang Ji