Evaluation device of cyclohexenol catalyst prepared by using benzene hydrogenation

Abstract

The invention discloses an evaluation device of a cyclohexenol catalyst prepared by using benzene hydrogenation, comprising a high pressure reaction kettle, wherein a feeding tank is sequentially connected with a feeding buffer tank and the high pressure reaction kettle via pipelines, the high pressure reaction kettle is sequentially connected with a cooler, a gas-liquid separating tank and a product collecting bottle via pipelines, the high pressure reaction kettle is internally provided with a sampling tube which is connected with a sampling tank arranged outside the high pressure reaction kettle, a hydrogen input tube is connected with the upper part of the feeding buffer tank and the sampling tube respectively through a tee; the device provided by the invention can implement multiple reaction evaluations on the preparation of a cyclohexenol catalyst sample prepared by using benzene hydrogenation to obtain the activity and service life parameters of the catalyst in a quasi-continuous state.

Description

technical field [0001] The invention belongs to the field of catalyst evaluation, and relates to a catalyst evaluation device for preparing cyclohexene from benzene hydrogenation. Background technique [0002] Cyclohexene is an important organic synthesis intermediate widely used in the production of adipic acid, nylon 6, nylon 66, polyamide, polyester and other fine chemicals. Traditional cyclohexene production methods include dehydration of cyclohexanol, dehydrohalogenation of halocyclohexane, dehydrogenation of cyclohexane, etc. These methods have long production process, high energy consumption, low efficiency, high cost, and a large number of by-products However, the selective hydrogenation of benzene to cyclohexene can solve the above problems well. The hydrogenation of benzene to cyclohexene adopts a metal catalyst containing ruthenium, and the reaction is carried out in a homogeneous system, with water as the continuous phase, the catalyst is suspended in the water ...

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Problems solved by technology

[0004] In the above evaluation method of benzene hydrogenation to cyclohexene catalyst, due to the limitations of the evaluation device itself, the reaction product cannot be taken out from the reactor, the catalyst can only perform a single reaction, and the catalyst has not yet reached a stable state, so the obtained results cannot be true reflect the performance of the catalyst

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