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Nickel molybdate nano-catalyst, and preparation method and application thereof

A nano-catalyst, catalyst technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as carbon deposition, achieve long service life, simple regeneration, excellent catalytic selectivity and conversion rate effect

Active Publication Date: 2020-05-19
南京环福新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The successful application of the present invention can not only realize the conversion of formaldehyde to high value-added hydrogen, but also solve the carbon deposition problem of nickel-based catalysts by utilizing the dissolvability of nickel molybdate. In addition, the nickel molybdate catalyst prepared by supercritical hydrothermal synthesis also has Excellent catalytic selectivity and conversion rate, thoroughly and effectively solve the problems of formaldehyde pollution and energy shortage, thus bringing huge economic, environmental and social benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Nickel chloride solution preparation

[0025] Weigh 2.3769g of nickel chloride hexahydrate and 5g of deionized water, place them in a 20mL cylindrical open glass bottle, dissolve them uniformly by ultrasonic vibration to form a nickel chloride solution, and set aside;

[0026] (2) Preparation of ammonium molybdate solution

[0027] Weigh 1.7655g of ammonium molybdate tetrahydrate and 5g of deionized water, place them in a 100mL polytetrafluoroethylene digestion tank, and dissolve them uniformly by ultrasonic oscillation to form an ammonium molybdate solution for later use;

[0028] (3) Supercritical hydrothermal synthesis

[0029] The open glass bottle that nickel chloride solution is housed in step (1) is placed in the polytetrafluoroethylene digestion tank in step (2), guarantees that nickel chloride solution does not have physical contact with ammonium molybdate solution simultaneously, then digests Seal the tank and place it in a stainless steel reactor, place...

Embodiment 2

[0033] (1) Nickel chloride solution preparation

[0034] Weigh 2.3769g of nickel chloride hexahydrate and 5g of deionized water, place them in a 20mL cylindrical open glass bottle, dissolve them uniformly by ultrasonic vibration to form a nickel chloride solution, and set aside;

[0035] (2) Preparation of ammonium molybdate solution

[0036] Weigh 1.7655g of ammonium molybdate tetrahydrate and 10g of deionized water, place them in a 100mL polytetrafluoroethylene digestion tank, dissolve them uniformly by ultrasonic oscillation to form ammonium molybdate solution, and set aside;

[0037] (3) Supercritical hydrothermal synthesis

[0038] The open glass bottle that nickel chloride solution is housed in step (1) is placed in the polytetrafluoroethylene digestion tank in step (2), guarantees that nickel chloride solution does not have physical contact with ammonium molybdate solution simultaneously, then digests Seal the tank and place it in a stainless steel reaction kettle, pl...

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Abstract

The invention discloses a nickel molybdate nano-catalyst, and a preparation method and application thereof. The nickel molybdate nano-catalyst is prepared from ammonium molybdate tetrahydrate, nickelchloride hexahydrate and deionized water as raw materials through a supercritical hydrothermal synthesis method, wherein a mass ratio of the ammonium molybdate tetrahydrate to the nickel chloride hexahydrate is 1.346: 1. The catalyst is suitable for hydrogen production through formaldehyde reforming and has the advantages of high H2 selectivity, long service life, simple regeneration and the like,and high-added-value carbon nanotubes can be separated during catalyst regeneration. The nickel molybdate nano-catalyst can convert the organic pollutant formaldehyde into hydrogen and prepare a large amount of carbon nanotubes at the same time, has the social and economic benefits of being environment-friendly, turning the waste into wealth and the like, and has wide market application prospects.

Description

technical field [0001] The invention relates to the technical fields of environmental protection catalysis and new energy, in particular to a nickel molybdate nano catalyst and its preparation method and application. Background technique [0002] As the global energy shortage becomes increasingly severe, the development and utilization of clean energy is imminent. Hydrogen, as a clean, efficient and renewable energy, is attracting extensive attention from researchers around the world. Commercial hydrogen production processes mainly fall into three categories: water electrolysis, coal gasification, and catalytic reforming, among which catalytic reforming is one of the hydrogen production processes with the greatest development potential. At present, the hydrogen sources of the catalytic reforming hydrogen production process are mainly methane, ethanol, methanol, etc. These hydrogen sources themselves have certain energy utilization, and their energy conversion methods do not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J37/10B82Y40/00C01B3/32C01B32/16C01B32/17C01G53/00
CPCB01J23/883B01J37/10B82Y40/00C01G53/00C01B3/326C01B32/16C01B32/17C01B2203/0233C01B2203/1058C01B2203/1211Y02P20/54Y02P20/584
Inventor 沈岳松金奇杰
Owner 南京环福新材料科技有限公司
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