Nickel-based composite catalyst for methane reforming with carbon dioxide to produce synthesis gas under pressurization

A composite catalyst and carbon dioxide technology, applied in metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, hydrogen/synthesis gas production, etc., can solve the problem that the reforming methane reaction cannot continue and is difficult to achieve commercialization Application, rapid catalyst deactivation and other problems, to achieve the effect of inhibiting carbon deposition, increasing dispersion and surface active metal content, and improving catalytic activity and stability
CN108620079AActive Publication Date: 2018-10-09SHAANXI NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHAANXI NORMAL UNIV
Publication Date
2018-10-09

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Abstract

The invention discloses a nickel-based composite catalyst for methane reforming with carbon dioxide to produce a synthesis gas under pressurization. A carrier of the catalyst is at least one selectedfrom SiO2, Al2O3 and TiO2, an active component is Ni, Ni-Fe or Ni-Co, and an auxiliary agent is one selected from composite oxides such as CeO2-La2O3, CeO2-Sm2O3, CeO2-Pr6O11, CeO2-Nd2O3 and CeO2-Y2O3; based on a mass of the catalyst of 100%, the catalyst comprises 5%-15% of the active component, 3%-15% of the auxiliary agent, and the balance of the carrier; and the catalyst is prepared by adopting a coordination-decomposition method with glycine, alanine, threonine, citric acid and oxalic acid as a coordination-combustion improver. The catalyst disclosed by the invention has a simple preparation process and lower costs, and is economic and environmentally friendly; and the catalyst has a higher methane and carbon dioxide conversion rate for methane reforming with the carbon dioxide underthe pressurization, exhibits high activity, high stability and extremely high resistance to carbon deposition and sintering.
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Description

technical field

[0001] The invention belongs to the technical field of catalysts, and in particular relates to a nickel-based composite catalyst used for carbon dioxide reforming methane to produce synthesis gas under pressurized conditions. Background technique

[0002] In recent years, with the deepening of people's understanding of the greenhouse effect, CO, one of the strongest greenhouse gases, 2 The capture of and its applications have attracted increasing attention. Carbon dioxide reforming of methane can simultaneously utilize CO 2 and CH 4 The two major greenhouse gases are of great significance to the reduction of greenhouse gas emissions, and the H of syngas 2 / CO≤1, it can be used as raw material gas for the synthesis of carbonyl and organic oxygen-containing compounds. Since Ashcroft et al. (Nat.Chem., 1991, 352:225-226) reported the research on reforming methane with carbon dioxide, reforming methane with carbon dioxide has attracted extensive attention of ...

Claims

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