Wanhua Chemical Group Co., Ltd.

Wanhua Chemical (Ningbo) Co., Ltd.

Bingbo Hu

Yuan Li

Weiqi Hua

Qingmei Jiang

Hao Chen

Hui Wang

Congying Zhang

Jinhong Song

Zaigang Yang

Zhongying Chen

Zilin Ni

Ruihua Cheng

Baiping Liu

Hua Mei

Dewei Yu

Shanjian Cao

Lei Qin

Jun Qu

The present invention relates to a composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst. The composite catalyst comprises: (A) a titanium compound catalyst active component, (B) an organometallic compound co-catalyst component, (C) a sulfoxide compound catalyst-modifying component, (D) a monoester compound catalyst-modifying component, and (E) a solvent component. The composite catalyst has advantages of excellent selectivity, high catalytic activity, easy preparation and so on.

Composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst

The present invention relates to a catalyst for fixed bed aniline rectification residue recycling and preparation method thereof. Based on the total weight of the catalyst, the catalyst comprises the following components in percentage by weight: 5-40% of an active component, 2-30% of a first cocatalyst component, 10-30% of a second cocatalyst component and the balance of carrier, wherein the active component is NiO; the first cocatalyst component is one or more of Fe, Mo, Cr or Co oxide; and the second cocatalyst component is one or more of La, Zr, Y or Ce oxide. The catalyst is prepared through co-precipitation. The catalyst shows high activity and stability in the waste liquid treatment process, and can still maintain high rectification residue cracking rate after reaction of 200 hours.

Catalyst for fixed bed aniline rectification residue recycling and preparation method

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Yantai, China

Bingbo Hu