Process for producing nano-crystalline platinum carbon catalyst

Abstract

The invention relates to a preparation method of a highly active nanocrystal platinum carbon catalyst, including the preparation of a platinum complex compound and the adsorption of a platinum complex compound. The highly active carbon nanocrystal platinum carbon catalyst made in the method of the invention not only solves the problems that the granularity and the dispersion degree of the platinum made in the traditional precipitation method and the traditional impregnation method are hard to effectively control, the repetitiveness of the batch catalyst is bad, the active component of the made catalyst has broad range, large size, ununiformity, low dispersity and poor stability, the nanocrystal platinum carbon catalyst is hard to separate from products and is easy for conglobation with few repetitiveness, but also maintains the granular distribution and size similar to the granular distribution and size of the nanocrystal platinum carbon catalyst. The highly active nanocrystal platinum carbon catalyst made in the method of the invention has better dispersity of nanocrystal platinum granularity, higher catalytic activity in the catalytic reaction, better selectivity and longer service life.

Description

Technical field [0001] The invention relates to a preparation method of a highly active nanocrystalline platinum carbon catalyst. Background technique [0002] Nanocrystalline platinum carbon catalyst is a supported catalyst. The preparation of supported catalysts by traditional precipitation and impregnation methods has poor process stability and repeatability, a long production process, high consumption, and complex operating factors. Large, uneven distribution, low dispersity, few repetitions, low yield of hydrogenated products and high by-products. [0003] The particle distribution, particle size and dispersion of catalysts prepared by traditional precipitation and impregnation methods are affected by complex factors such as the batch and pretreatment of the carrier, the temperature of the reaction, the speed of stirring, the concentration of the reaction system, the concentration of the reducing agent and its type. influences. During the preparation of the catalyst,...

AI Technical Summary

Problems solved by technology

When the platinum nuclei of the active component are formed on the surface of the carrier, the platinum nuclei will grow and agglomerate on the carrier, the particle size and dispersion of platinum are difficult to effectively control, and the repeatability of batch catalysts is poor

The prepared catalyst has a wide range of active component particles, large particle size, uneven distribution, low dispersion, poor stability and reproducibility, and it is difficult to prepare a highly active and highly dispersed nanocrystalline platinum carbon catalyst

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