Preparation method of nitration catalyst and application
A nitration catalyst and catalyst technology, which can be used in catalyst activation/preparation, nitro compound preparation, physical/chemical process catalysts, etc., can solve the problem of high reaction temperature, achieve low impurity content, reduce the generation of waste acid, and be easy to separate. Effect
Inactive Publication Date: 2019-12-13
CHINA PETROLEUM & CHEM CORP +1
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Abstract
The invention provides a preparation method of a nitration catalyst. The preparation method comprises the following steps: performing acid pickling on a catalyst carrier, wherein the mass ratio of thecarrier to an acid is (1:0.5)-(1:5), the washing temperature is 20-80 DEG C, and the time is 1-6 hours; performing modification treatment on the pretreated catalyst carrier, wherein the treatment temperature is 20-80 DEG C, the treatment time is 1-6 hours, and the soaking time is 0.5-24 hours; and after modification, performing washing till neutral, performing filtering, and performing drying androasting, wherein the roasting temperature is 200-600 DEGC. By adopting the preparation method provided by the invention, after acid pickling with the catalyst carrier, the impurity content is low; as the catalyst is modified by using a modifier, the content of waste acids can be reduced, thus being environment-friendly; and a reaction product is easy to separate from the catalyst.
Application Domain
Molecular sieve catalystsOrganic-compounds/hydrides/coordination-complexes catalysts +2
Technology Topic
Spent acidTreatment time +4
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- Comparison scheme(1)
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