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Preparation method and application of heterogeneous catalyst for olefin oxidation carboxylation

A heterogeneous catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc., can solve the difficulty of catalyst separation, easy deactivation of ionic liquid, Low catalyst activity and other problems, to achieve uniform and rapid immobilization, simple preparation method, and low cost

Active Publication Date: 2021-08-13
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the combined catalytic system, the catalytic activity of ionic liquid has been further improved, but there are still problems such as difficulty in separating the product from the ionic liquid catalyst, easy deactivation of the ionic liquid, and low catalyst activity.

Method used

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  • Preparation method and application of heterogeneous catalyst for olefin oxidation carboxylation
  • Preparation method and application of heterogeneous catalyst for olefin oxidation carboxylation
  • Preparation method and application of heterogeneous catalyst for olefin oxidation carboxylation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 0.7gSBA-15 and 0.3gN(CH 3 ) 2 -[Im][Br] joins in the zirconia ball mill jar, adds 10 diameter φ=10mm in the jar, the zirconia grinding ball of 20 diameter phi=5mm, under the condition of solvent-free, with 500r / min N(CH 3 ) 2 -[Im][Br]@SBA-15 catalyst.

Embodiment 2

[0029] Weigh 0.7gSBA-15 and 0.3gNH 2 -[Im][Br] joins in the zirconia ball mill jar, adds 10 diameter φ=10mm in the jar, the zirconia grinding ball of 20 diameter phi=5mm, under the condition of solvent-free, with 1000r / min After rotating dry mechanical ball milling for 1 hour, NH 2 -[Im][Br]@SBA-15 catalyst.

Embodiment 3

[0031] Weigh 0.5g SBA-15 and 0.1g N(Et 2 ) 2 -[Im][Br] joins in the zirconia ball mill jar, adds 10 diameter φ=10mm in the jar, the zirconia grinding ball of 20 diameter phi=5mm, under the condition of solvent-free, with 1000r / min N(Et 2 ) 2 -[Im][Br]@SBA-15 catalyst.

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Abstract

The invention provides a preparation method and application of a heterogeneous catalyst for olefin oxidation carboxylation, and relates to the technical field of heterogeneous catalysts for olefin oxidation carboxylation. According to the prepared catalyst, a mesoporous silica molecular sieve is used as a carrier, amino-functionalized imidazole ionic liquid is used as an active component, and the ionic liquid is quantitatively and uniformly loaded on the carrier mesoporous silica through mechanical ball milling under a solvent-free condition. The ionic liquid immobilized heterogeneous catalyst provided by the invention has the advantages of regular mesoporous structure, stable physical and chemical properties, good catalytic activity on olefin oxidation carboxylation reaction (the yield of cyclic carbonate synthesized by olefin oxidation and CO2 cascade reaction can reach 85%), recyclability and the like, and is suitable for catalyzing the reaction of CO2 and olefin to prepare cyclic carbonate by a one-step method.

Description

technical field [0001] The invention relates to the technical field of heterogeneous catalysts for oxidative carboxylation of olefins, in particular to a preparation method and application of a heterogeneous catalyst for oxidative carboxylation of olefins. Background technique [0002] CO 2 It is one of the main greenhouse gases that cause the global "greenhouse effect", and it can also release CO 2 As a cheap, easily available and renewable C1 resource, it is used to synthesize bulk high value-added chemicals. Among them, CO 2 Reaction with epoxides to synthesize cyclic carbonates is CO 2 One of the important methods of chemical utilization, the practical application of this process is limited by the high price and toxicity of epoxides. In contrast, the synthesis of cyclic carbonates by oxidative carboxylation directly from less toxic and cheap alkenes can greatly reduce the cost and safety of production. [0003] Currently, with regard to catalytic olefins and CO 2 I...

Claims

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Application Information

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IPC IPC(8): B01J31/02B01J37/00C07D317/36
CPCB01J31/0295B01J31/0281B01J37/0036C07D317/36Y02P20/584
Inventor 赵天翔龙光才廖全兰杨春亮
Owner GUIZHOU UNIV
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