Solid strong acid catalyst and its preparing method

A solid strong acid and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low isomerization selectivity and many cracking products
CN1524616AInactive Publication Date: 2004-09-01CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2004-09-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention is a solid strong-acid catalyst, containing a mixed oxide sulfated by sulfocompound, its sulfur content 1.0-2.5 m%, where the mixed oxide is composed of zirconia, silicon oxide and alumina in the dry-based mass ratio of 30-90 to 1-30 to 9-40, and the monoclinic crystal phase proportion of zirconia is 10-70 m% and the rest square crystal phases. It is applied to isomerization reaciton of C4-C7 alkanes and has higher isomerization activity and selectivity.
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Description

technical field

[0001] The invention relates to a solid superacid catalyst and a preparation method thereof, in particular to a solid strong acid catalyst containing zirconia and sulfate radicals and a preparation method thereof. Background technique

[0002] Acid catalysts play an important role in the petrochemical industry. Commonly used acid catalysts include liquid acid catalysts, such as H 2 SO 4 , HF and halogen-containing solid acid catalysts. These two types of catalysts have problems such as polluting the environment and corroding equipment. Halogen-containing solid acid catalysts have strict requirements on the water in the raw material because the halogens are easily lost, and the halogens need to be replenished frequently to maintain the activity of the catalyst. The solid strong acid catalyst disclosed in Japanese Laid-Open Patent Publication No. 59-6181 is prepared by treating the oxide or hydroxide of Group IV metal with a sulfur-containing compound and ca...

Claims

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