Nieuwland catalyst as well as preparation method and application thereof

A technology of catalyst and buffering agent, which is applied in the field of catalyst preparation, can solve the problems such as the decrease of vinyl acetylene yield, and achieve the effects of simplified process, strong activation ability, acetylene conversion rate and vinyl acetylene selectivity stability
CN103285931AActive Publication Date: 2013-09-11ANHUI ANQING SHUGUANG CHEM GRP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ANHUI ANQING SHUGUANG CHEM GRP
Publication Date
2013-09-11

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Abstract

The invention provides a Nieuwland catalyst as well as a preparation method and an application thereof. The Nieuwland catalyst comprises the following components in parts by weight: 20 to 40 parts of CuCl as an active component and 1 to 20 parts of buffering agent, wherein the pH value of catalyst is kept within the range of 4.5 to 6.8 through the buffering agent. The Nieuwland catalyst has the good stability in an acetylene dimerization reaction, so that the Nieuwland catalyst can be efficiently applied to the production of vinyl acetylene.
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Description

technical field

[0001] The invention relates to the technical field of catalyst preparation. In particular, the present invention relates to Nieuwland catalysts and their preparation and use. More specifically, the present invention provides a Nieuwland catalyst, a method for preparing Nieuwland catalyst, a method for preparing vinylacetylene and a vinylacetylene product. Background technique

[0002] Vinyl acetylene is the main raw material for the production of neoprene monomer chloroprene, and can also be used in the production of important chemical products such as 4-chlorophthalic anhydride, diacetylbenzene, benzene, and styrene. Therefore, it is of great significance to efficiently produce vinyl acetylene.

[0003] In the current price segment, the industry mainly produces vinyl acetylene through acetylene dimerization reaction using Nieuwland catalyst. During the dimerization of acetylene, the Nieuwland catalyst needs to maintain a weak acidity. The current Nieuwla...

Claims

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