Low-temperature methane steam reforming catalyst and preparation method thereof

A technology of methane steam and reforming catalyst, which is applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor catalytic effect, long production cycle and high preparation cost, and achieve shortened time, improve production efficiency, and avoid the effects of high preparation costs

Active Publication Date: 2014-03-05
ENN SCI & TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high preparation cost, long production cycle and poor catalytic effect in the prior art, one aspect of the present invention proposes a method for preparing a low-temperature methane steam reforming catalyst, comprising the following steps:

Method used

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  • Low-temperature methane steam reforming catalyst and preparation method thereof

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preparation example Construction

[0028] Catalyst preparation method

[0029] Such as figure 1 As shown in step S101, the carrier, active agent and auxiliary agent are put into a pulverizer together for pulverization. The pulverizer used is a small laboratory frequency conversion speed regulation pulverizer (model RT-08SC). In some embodiments, the amount of filler in the pulverizer is 30% to 70%, and the rotational speed of the controller is in the range of about 10000r / m to about 25000r / m. In some embodiments, the crushing time is controlled within the range of 10 minutes to 20 minutes. In a preferred embodiment, the carrier includes nano-Al 2 o 3 , cordierite nano powder and nano SO 2 etc.; the active agent is a nickel-containing compound including one of nickel hydroxide, nickel nitrate, nickel carbonate, nickel chloride and nickel acetate or any combination thereof, and the auxiliary agent includes zirconium nitrate, potassium nitrate, magnesium nitrate, nitric acid Nitrates of calcium, cerium nit...

Embodiment 1

[0035] Nano Al 2 o 3, nickel nitrate and additives are put into the grinder at a mass ratio of 10:2:0.5, wherein the additives include cerium nitrate and zirconium nitrate, and their mass ratio is 3:2. The filler content of the pulverizer is 40%, the speed of the pulverizer is controlled to be 10000r / m, and the pulverization time is 10 minutes. Then put the pulverized mixture into a high-energy ball mill, control the speed of the ball mill to 400r / m, and control the ball milling time to 25 minutes. The obtained particle mixture is the catalyst precursor powder. The precursor powder obtained in the ball milling process was calcined at a temperature of 400° C. for 3 hours to obtain particle powder. The obtained catalyst powder is pressed into tablets and pulverized into 60-80 mesh particles to finally obtain catalyst particles.

Embodiment 2

[0037] Nano Al 2 o 3 , nickel nitrate and additives are put into the grinder at a mass ratio of 10:1.5:0.2, wherein the additives include cerium nitrate, zirconium nitrate and manganese nitrate, and their mass ratio is 2:1:1. The filler content of the pulverizer is 45%, the speed of the pulverizer is controlled to be 15000r / m, and the pulverization time is 12 minutes. Then put the pulverized mixture into a high-energy ball mill, control the speed of the ball mill to 500 r / m, and control the ball milling time to 20 minutes, and the obtained particle mixture is the catalyst precursor powder. The precursor powder obtained in the ball milling process was calcined at a temperature of 500° C. for 3 hours to obtain particle powder. The obtained catalyst powder is pressed into tablets and pulverized into 60-80 mesh particles to finally obtain catalyst particles.

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Abstract

The invention provides a preparation method for a low-temperature methane steam reforming catalyst. The preparation method comprises the following steps of crushing a carrier, an active agent and an auxiliary to obtain a mixture, wherein the active agent is a nickel-containing compound, and the auxiliary is nitrate; ball-milling the mixture to obtain nanometer powder; calcining the nanometer powder to obtain fine powder; tabletting the fine powder, crushing and sieving. According to the method, process steps are reduced, so that the process production time is remarkably shortened, and the production efficiency is improved; compared with other catalysts in the prior art, the methane steam reforming catalyst prepared by the method has a good conversion effect during methane steam reforming reaction.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a low-temperature methane steam reforming catalyst and a preparation method thereof. Background technique [0002] With the continuous reduction of petrochemical resources, environmental pollution is becoming more and more serious, and the demand for energy in human society is increasing. Improving the utilization efficiency of petrochemical resources has become an urgent task for human beings. [0003] With the increase of proven reserves of natural gas and the continuous maturity of the technology of producing synthetic gas from natural gas, the efficient utilization of natural gas has gradually been put on the agenda. The main component of natural gas is methane, and steam reforming of methane to synthesis gas is one of the effective ways to use methane resources rationally and efficiently. [0004] In the existing field of catalyst manufacture, a CH 4 Reformed CO 2 The preparation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/889B01J23/78B01J23/755B01J37/00C01B3/40
CPCY02P20/52
Inventor 赵伟武斌王东升
Owner ENN SCI & TECH DEV
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