Preparation method for alpha-alumina supported nickel phosphide catalyst

An alumina-loaded, nickel-phosphide technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of difficult to treat phosphorus-containing wastewater, complicated implementation process, etc., and achieve no three-waste formation. , Simple steps, good feasibility effect
CN103223348AInactive Publication Date: 2013-07-31QINGDAO UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
QINGDAO UNIV OF SCI & TECH
Publication Date
2013-07-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a preparation method for an alpha-alumina supported nickel phosphide catalyst. The preparation method comprises the following steps of preparing an impregnation liquid, equivalent-volume impregnating, drying, calcining, carrying out the procedures again and reducing. The preparation method is improved based on a temperature-programmed reduction method. Nickel and phosphor precursors are transferred into nickel phosphide under the catalytic reduction action of a trace amount of Pd or Ru (less than or equal to 0.1 wt.%) by using the alpha-Al2O3 as a carrier. A core of the preparation method lies in that a reduction temperature is reduced to below a 500 DEG C by using catalytic action of Pd or Ru in the temperature-programmed reduction process, thereby effectively preventing the disadvantages brought by high temperature reduction. The preparation method has good practicability and usage effects without forming three wastes (waste gas, waste water and waste residues), and is safe and environment-friendly.
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Description

technical field

[0001] The invention relates to the preparation of a catalytic material, in particular to a preparation method of a nickel phosphide catalyst. Background technique

[0002] In recent years, researchers have found that nickel phosphide has excellent performance and can be applied in the fields of deep hydrodesulfurization, denitrogenation, dehalogenation and dearomatization. It is a new type of highly active hydrogenation catalytic material. The key to the industrial application of new catalytic materials lies in the feasible industrial preparation process. This includes engineering feasibility, engineering economy, and environmental protection.

[0003] At present, the common preparation methods of nickel phosphide catalysts include solvothermal method, temperature-programmed reduction method and hypophosphite decomposition method:

[0004] 1. Solvothermal method

[0005] The solvothermal method is a common method for preparing Ni2P grains in the laborator...

Claims

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