A copper-doped ni/sio 2 Nanocomposite catalyst and preparation method thereof

Abstract

The invention relates to a kind of Ni-Cu / SiO prepared by using mesoporous silicon dioxide as a carrier and nickel nanocrystals as the main active component, and improving the prepared Ni-Cu / SiO by copper doping. 2 The invention discloses a method for the stability of methane dry reforming with a nanocomposite catalyst, which belongs to the technical field of catalyst preparation. The nanocomposite catalyst is prepared from raw materials such as nickel nitrate, sodium silicate and dilute nitric acid by simple precipitation method, aging, filtering, washing, drying, grinding and reduction. The preparation process is simple, no high temperature calcination is required, and the raw materials are cheap and easy to obtain The cost is low; the catalyst obtained in the invention has the advantages of high catalytic activity, good stability, etc., no obvious decline in activity after reacting at 700° C. for 140 hours, and strong anti-sintering and anti-carbon deposition capabilities. The catalyst is applied to the dry reforming reaction of methane, which can provide effective utilization of natural gas and CO 2 Emission reduction and other issues provide an effective solution.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, in particular to a copper-doped Ni / SiO 2 Nanocomposite catalyst and its preparation method. Background technique [0002] As a high-quality and efficient clean energy and chemical raw material, natural gas is widely used in urban gas, industrial fuel, power generation and chemical industries. Due to the increasing shortage of petroleum resources and increasingly stringent environmental protection requirements, the use of methane to synthesize oil, olefins, oxygenated compounds, and hydrogen has become an important way to utilize methane, which has attracted special attention from domestic and foreign governments, enterprises, and academic institutions. Global warming due to the emission of greenhouse gases is of great significance. At present, the catalysts used for the reforming of methane and carbon dioxide to produce synthesis gas are mostly supported metal catalysts, which are ...

AI Technical Summary

Problems solved by technology

Cobalt, zirconium, molybdenum and other metals are supported on the carrier activated carbon by ultrasonic impregnation, and then dried, roasted and reduced to obtain a catalyst; although the catalyst has good catalytic activity, its main activity comes from cobalt, zirconium, molybdenum and other metals Components, the metal components in the catalyst are complex and used in a large amount, and the preparation process is cumbersome and complicated

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