China Petroleum Chemical Corporation

Shanghai Research Institute of Petrochemical Technology, Sinopec

Siqin Li

Juntao Liu

Lei Li

Jun Kuai

Linna Zhang

Wanmin Wang

Fengxia Sun

Zhiyan Zhu

Junhua Zhu

Yuanlin Cheng

The present invention discloses a process for the selective hydrogenation of phenylacetylene in the presence of styrene, comprising contacting a phenylacetylene and styrene-containing hydrocarbon fraction feedstock with a carbon-containing catalyst under hydrogenation reaction conditions, wherein the carbon-containing catalyst has a carbon content of from 0.02 to 8 wt % based on the weight of the catalyst.

Method for selective hydrogenation of phenylacetylene in the presence of styrene

The present invention discloses a process for the selective hydrogenation of phenylacetylene in the presence of styrene conducted in a combined bed, which process comprises under hydrogenation reaction conditions, passing a hydrocarbon fraction feedstock containing phenylacetylene and styrene through a combined bed reactor containing a catalyst A and a catalyst B to contact the feedstock with the catalyst A and the catalyst B in turn, wherein the catalyst A is a nickel-based catalyst, the catalyst B is at least one selected from the group consisting of palladium-based catalysts and copper-based catalysts, and a weight ratio of the catalyst A loaded to the catalyst B loaded is from 0.5:1 to 5:1.

Method for selective hydrogenation of phenylacetylene using composite bed in the presence of styrene

The present invention relates to a process for producing C-Calkyl nitrite, comprising loading a resin catalyst layer and/or a porous filler layer into a reactor, passing nitrogen oxide, oxygen and C-Calkanol as raw materials through the resin catalyst layer and/or porous filler layer in a counter current, parallel current or cross current manner, reacting under the conditions including a reaction temperature of from 0 to 150&#xb0; C., a reaction pressure of from &#x2212;0.09 to 1.5 MPa, a molar ratio of C-Calkanol/nitrogen oxide of 1-100:1, a molar ratio of nitrogen oxide/oxygen of 4-50:1, to obtain an effluent containing C-Calkyl nitrite, wherein said nitrogen oxide is NO, or a mixed gas containing NO and one or more selected from NOand NO.

Process for producing Cl-C4 alkyl nitrite

A process for selective oxidative dehydrogenation of a hydrogen-containing CO mixed gas, comprising contacting a hydrogen-containing CO mixed gas raw material with at least one catalyst entity having an increased activity gradient disposed in a reactor under at least one reaction condition chosen from a reaction temperature ranging from 100 to 300&#xb0; C., a volume space velocity ranging from 100 to 10000 h, and a reaction pressure ranging from &#x2212;0.08 to 5.0 MPa, wherein the molar ratio of oxygen to hydrogen in the raw material ranges from 0.5:1 to 5:1.

Process for selective oxidative dehydrogenation of a hydrogen-containing CO mixed gas

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Shanghai, China

Siqin Li