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Molecular sieve hydrogen production catalyst and preparing method and application thereof

A catalyst and molecular sieve technology, applied in the field of catalysis, can solve the problems of reduced catalyst activity and stability, carbon deposition, etc., and achieve the effects of low cost and equipment requirements, simple preparation method, and high commercial application value.

Inactive Publication Date: 2019-05-31
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has a uniform channel and a unique crystal structure. Each type of molecular sieve has a unique channel structure and size, so different types of molecular sieves can be selected according to different reactions. Most molecular sieves have strong acidity on the surface, while Acidity will lead to carbon deposition in the reaction, reducing the activity and stability of the catalyst

Method used

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  • Molecular sieve hydrogen production catalyst and preparing method and application thereof
  • Molecular sieve hydrogen production catalyst and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Catalyst A

[0022] (1) Add 0.51g of nickel nitrate, 1.28g of cetyltrimethylammonium bromide and 2.11g of sodium hydroxide into the flask, then add 65ml of deionized water, heat in a water bath at 40°C and 400 rpm Stir for 2 hours.

[0023] (2) Ethyl orthosilicate was added dropwise to the above solution at a speed of 4 seconds / drop, and continuously stirred at a speed of 400 rpm for 24 hours.

[0024] (3) Move the above-mentioned silicate hydrated sol containing metal nitrates into a reaction kettle, and the volume of the silicate hydrated sol accounts for about 70% of the kettle.

[0025] (4) The silicate hydrated sol was placed in a reaction kettle for hydrothermal crystallization at 120° C. for 24 hours.

[0026] (5) Put the product obtained in the above reaction kettle into deionized water 30 times its volume, wash it 3 times and then centrifuge it to neutrality.

[0027] (6) The obtained product was dried at 100° C. for 12 hours.

[0028] (7) Cal...

Embodiment 2

[0029] Example 2: Catalyst B

[0030] (1) Add 0.52g of nickel nitrate, 1.34g of cetyltrimethylammonium chloride and 2.24g of sodium hydroxide into the flask, then add 65ml of deionized water, heat in a water bath at 40°C and 400 rpm Stir for 2 hours.

[0031] (2) Ethyl orthosilicate was added dropwise to the above solution at a speed of 4 seconds / drop, and continuously stirred at a speed of 400 rpm for 24 hours.

[0032] (3) Move the above-mentioned silicate hydrated sol containing metal nitrates into a reaction kettle, and the volume of the silicate hydrated sol accounts for about 70% of the kettle.

[0033] (4) The silicate hydrated sol is placed in a reaction kettle for hydrothermal crystallization at 140° C. for 24 hours.

[0034] (5) Put the product obtained in the above reaction kettle into deionized water 30 times its volume, wash it 3 times and then centrifuge it to neutrality.

[0035] (6) The obtained product was dried at 110°C for 12 hours.

[0036] (7) Calcinin...

Embodiment 3

[0037] Example 3: Catalyst C

[0038] (1) Add 0.52g of nickel nitrate, 0.68g of cetyltrimethylammonium chloride, 0.63g of cetyltrimethylammonium bromide and 2.24g of sodium hydroxide into the flask, then add 65ml of Deionized water, heated in a water bath at 40°C and stirred at 400 rpm for 2 hours.

[0039] (2) Ethyl orthosilicate was added dropwise to the above solution at a speed of 4 seconds / drop, and continuously stirred at a speed of 400 rpm for 24 hours.

[0040] (3) Move the above-mentioned silicate hydrated sol containing metal nitrates into a reaction kettle, and the volume of the silicate hydrated sol accounts for about 70% of the kettle.

[0041] (4) The silicate hydrated sol was placed in a reaction kettle for hydrothermal crystallization at 120° C. for 24 hours.

[0042] (5) Put the product obtained in the above reaction kettle into deionized water 30 times its volume, wash it 3 times and then centrifuge it to neutrality.

[0043] (6) The obtained product was d...

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Abstract

The invention belongs to the technical field of catalysis, and particularly relates to a molecular sieve hydrogen production catalyst and a preparing method and application thereof. According to the preparing method, solid metal nitrate, a solid organic template agent and solid alkali are physically mixed, then deionized water is added into the solid mixture to be prepared into a mixed solution, asilicon source solution is dropwise added into the mixed solution, the new mixed solution is put into a hydro-thermal reaction kettle after being subjected to stirring and standing, then materials ofdifferent porous structures are prepared through a one-step hydro-thermal synthesis method, and then the molecular sieve hydrogen production catalyst is prepared through high-temperature roasting. The prepared catalyst is suitable for being applied to catalytic reactions of hydrogen production through methane steam reforming.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and in particular relates to a molecular sieve hydrogen production catalyst and its preparation method and application. Background technique [0002] With the increasing depletion of petroleum resources and the increasing seriousness of environmental pollution, the development and utilization of clean and cheap fuel resources has attracted widespread attention from all countries. As an efficient, clean and high-quality energy, hydrogen occupies an important position in the world's energy consumption structure. Due to its high calorific value and environmental friendliness, hydrogen is known as the main green energy in the future world. Hydrogen production from natural gas has been widely used in industrial production, and the main component of natural gas is methane, so methane reforming is the most widely used to produce hydrogen. The reactions of methane reforming to hydrogen mainly include S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/035C01B3/32
Inventor 潘立卫王娟王泽昱
Owner DALIAN UNIV
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