Catalytic hydrogenation method adopting naphthalene as hydrogen storage agent

A catalytic hydrogenation and hydrogen storage technology, which is applied in the field of hydrogen storage materials in the field of chemical engineering technology, can solve the problems of easy modulation of amorphous alloy structure, highly unsaturated coordination, high catalytic efficiency, etc. The effect of reversible hydrogen reaction and simple hydrogen storage equipment

Inactive Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Catalysts for the catalytic hydrogenation of aromatics currently mainly include noble metal series and non-noble metal series. The noble metal series include Pd, Pt and other series of catalysts, which have high catalytic efficiency, but are expensive and easily deactivated under harsh reaction conditions of high temperature and high pressure.
The non-precious metal series mainly refers to nickel-based catalysts, including Raney nickel and supported nickel catalysts. Their cost is relatively low, but they also have certain limitations, such as poor heat resistance, easy-to-modulate structure of amorphous alloys, coordination Unique properties such as high unsaturation and chemical uniformity
Compared with traditional Raney nickel and supported catalysts, the amorphous Ni / Al alloy catalyst has smaller particle diameter, more uniform, higher specific surface area, and higher catalytic activity, but the amorphous Ni / Al alloy catalyst is currently The chemical hydrogen storage method for naphthalene hydrogenation using Ni / Al alloy as a catalyst has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Hydrogenation reaction of naphthalene

[0016] Add 12 grams of naphthalene, 10 grams of decahydronaphthalene and 0.2 gram of commercially available amorphous Ni / Al alloy catalyst in a 250ml autoclave, feed the air in the hydrogen displacement kettle for 3 times, feed 1 gram of hydrogen, and its hydrogen pressure is 4.0 MPa, after the hydrogenation is completed, the temperature is raised to react, the oven temperature is set to 150°C, and the reaction time is 5 hours. After the reaction, the reactor is taken out, cooled to room temperature and discharged. The conversion rate of naphthalene is 99.2% as measured by sampling.

[0017] (2) Separation of catalyst

[0018] The decahydronaphthalene generated by the above reaction is filtered to recover the amorphous Ni / Al alloy catalyst, which is immersed in ethanol or water for preservation for reuse.

Embodiment 2

[0020] (1) Hydrogenation reaction of naphthalene

[0021] Add 12 gram naphthalene, 8 gram tetrahydronaphthalene and 0.5 gram commercially available amorphous Ni / Al alloy catalyst in 250ml autoclave, pass into air 3 times in hydrogen displacement kettle, pass into 1 gram hydrogen, its hydrogen pressure is 2.0 MPa, after the hydrogenation is completed, the temperature is raised to heat up the reaction, the oven temperature is set to 200 ° C, and the reaction time is 4 hours. After the reaction, the reactor is taken out, cooled to room temperature and discharged. The conversion rate of naphthalene is 99.5% according to sampling.

[0022] (2) Separation of catalyst

[0023] The decahydronaphthalene generated by the above reaction is filtered to recover the amorphous Ni / Al alloy catalyst, which is immersed in ethanol or water for preservation for reuse.

Embodiment 3

[0025] (1) Hydrogenation reaction of naphthalene

[0026] In 250ml autoclave, add 12 gram naphthalene, 5 gram decahydronaphthalene and 0.5 gram commercially available amorphous Ni / Al alloy catalyst, pass into air 3 times in hydrogen replacement kettle, pass into 1.5 gram hydrogen, its hydrogen pressure is 5.0MPa, after the hydrogenation is completed, the temperature is raised to heat up the reaction, the oven temperature is set to 150°C, and the reaction time is 8 hours. After the reaction, the reactor is taken out, cooled to room temperature and discharged. The conversion rate of naphthalene is 99.3% according to sampling.

[0027] (2) Separation of catalyst

[0028] The decahydronaphthalene generated by the above reaction is filtered to recover the amorphous Ni / Al alloy catalyst, which is immersed in ethanol or water for preservation for reuse.

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Abstract

The invention discloses a catalytic hydrogenation method adopting naphthalene as a hydrogen storage agent. The catalytic hydrogenation method adopting the naphthalene as the hydrogen storage agent is characterized by adopting the naphthalene as a carrier, adopting an amorphous Ni/Al alloy as a catalyst, and carrying out catalytic hydrogenation at the pressure ranged from 2.0 to 5.0MPa and the temperature ranged from 100 DEG C to 280 DEG C to generate decahydronaphthalene for storing hydrogen. Compared with the prior art, the catalytic hydrogenation method adopting the naphthalene as the hydrogen storage agent provided by the invention has the advantages of simple hydrogen storage equipment, large hydrogen storage capacity, simple method, low cost, highly reversible hydrogen storage reaction, convenience in storing and releasing hydrogen, safety in storage and transportation, and high reaction conversion rate, the conversion rate of the naphthalene can achieve 99.6 percent, and the yield of the decahydronaphthalene can achieve 99.2 percent.

Description

technical field [0001] The invention relates to the field of hydrogen storage materials in the technical field of chemical engineering, in particular to a catalytic hydrogenation method using naphthalene as a hydrogen storage agent. Background technique [0002] Energy is the material basis for human existence and sustainable development. Due to the non-recyclability of traditional energy sources such as oil, coal, and natural gas, alternative energy sources such as solar energy, wind energy, geothermal energy, and hydrogen energy have long been valued and continuously developed. Among them, hydrogen energy is recognized as the most promising future energy. one. Hydrogen storage with organic hydrides is one of the new methods for studying hydrogen storage in recent years. When hydrogen storage is required, unsaturated organic compounds are used to react with hydrogen to form hydrides, thereby storing hydrogen; when hydrogen needs to be released, by controlling the temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/50C07C5/10
Inventor 张叶徐莉樊玲
Owner CHINA PETROLEUM & CHEM CORP
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