China Petroleum Chemical Corporation

Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

Beijing Sj Environmental Protection and New Material Co., Ltd.

Bingyi Li

Ting Huang

Jie Lin

Gang Zhao

Junling Zhou

Zifang Guo

Xiaofan Zhang

Lunjia Xie

Zhufang Sun

Qingqiang Gou

Tingjie Huang

Tong Zhou

Wenjun Mao

Qunyang Gao

Peng Kou

Hongxu Yang

Meiyan Fu

Fujiang Hong

Yonghua Ma

The present invention discloses a Ziegler-Natta catalyst system for olefin polymerization, comprising at least one compound represented by formula (I) as (i) an internal electron donor, (ii) an external electron donor, or (iii) the both, wherein M, M, M, M, M, M, M', M&#x2032;, M&#x2032;, M&#x2032;, M&#x2032; and M&#x2032; are each independently selected from the group consisting of hydrogen, hydroxy, amino, aldehyde group, carboxy, acyl, halogen atoms, &#x2014;Rand &#x2014;OR, wherein Rand Rare each independently a C-Chydrocarbyl, which is unsubstituted or substituted by a substituent selected from the group consisting of hydroxy, amino, aldehyde group, carboxy, acyl, halogen atoms, C-Calkoxy and heteroatoms; and wherein, when among M-Mand M&#x2032;-M&#x2032;, any two adjacent groups on the same phenyl ring are each independently selected from the group consisting of Rand &#x2014;OR, the two adjacent groups may optionally be linked to form a ring, with a proviso that M, M, M, M, M, M, M&#x2032;, M&#x2032;, M&#x2032;, M&#x2032;, M&#x2032; and M&#x2032; are not simultaneously hydrogen. 

Olefin polymerization catalyst comprising cyclotriveratrylene and derivatives thereof

The present invention provides a process for preparing ball-type desulfurizer with high sulfur capacity, comprising the following steps: placing initial balls in a rolling equipment; wetting the surface of the initial balls with an aqueous solution of an organic binder; then alternately adding non-crystalline iron oxide hydroxide and the aqueous solution of the organic binder to gradually form small balls of non-crystalline iron oxide hydroxide with high sulfur capacity and different diameters; and adjusting the shape of the small balls and then roasting or naturally drying the small balls. In the desulfurizer prepared by this method, the initial balls constitutes 0.98 wt %-9.03 wt % of the desulfurizer, the non-crystalline iron oxide hydroxide constitutes 90.29 wt %-98.62 wt % of the desulfurizer, and the organic binder constitutes 0.58 wt %-0.89 wt % of the desulfurizer. The present invention solves the problems that the desulfurizer with high sulfur capacity in the prior art has a high binder content and poor water resistance and diffusion performance, and provides a process for preparing a desulfurizer with high sulfur capacity, wherein a desulfurizer with high sulfur capacity and low binder content, good water resistance, good diffusion performance can be prepared.

Process for preparing ball-type desulfurizer with high sulfur capacity and product thereof

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Beijing, China

Bingyi Li