Catalyst used in preparation of long-chain alkane through catalytic hydrodeoxygenation of biomass

Abstract

The invention relates to a catalyst used in preparation of long-chain alkane through catalytic hydrodeoxygenation of biomasses such as microalgae oil, palm oil and plant oil. The catalyst mainly comprises two active ingredients: an acid center of a carrier containing a transition metal and a hydrogenation activity center of the metal, wherein the acid center of the carrier containing the transition metal is used for dewatering an intermediate product generated in biomass hydrogenation, is used as a strong Lewis acid center simultaneously, and has the very strong oxyphilic capacity, so that an important role in hydrogenolysis of a C-O bond is developed. According to the catalyst disclosed by the invention, for example, in the hydrodeoxygenation process of the palm oil, the plant oil and the microalgae oil, the raw material conversion rate can reach 100 percent and the alkane selectivity is more than 90 percent. According to the catalyst disclosed by the invention, the high-selectivity preparation of the long-chain alkane is realized under a relative mild condition, and the problems of rigorous reaction conditions, low energy efficiency, and low high-carbon alkane selectivity in the process of preparing the long-chain alkane from the biomasses are solved.

Description

technical field [0001] This patent relates to a catalyst and reaction process for the efficient preparation of long-chain alkanes by catalyzing the hydrodeoxygenation of biomass (palm oil, vegetable oil, microalgae oil) under relatively mild conditions. It belongs to the use of biomass and its derivatives to synthesize fuel and chemical product research field. Background technique [0002] With the increasingly prominent energy and environmental issues, the development of renewable new energy has become a top priority. Due to the characteristics of low cost, renewable, low pollution and sustainable development of biomass resources, new technologies for preparing fuel oil and fine chemicals from biomass resources have attracted widespread attention at home and abroad. [0003] Lignocellulose is the cheapest and most abundant source of biomass, including cellulose, hemicellulose, and lignin. Currently, monosaccharides, furfural, 5-hydroxymethylfurfural, levulinic acid, pheno...

AI Technical Summary

Problems solved by technology

The catalyst of the present invention realizes the high-selectivity preparation of long-chain alkanes under relatively mild conditions, and solves the problem of harsh reaction conditions, low energy efficiency and low selectivity of high-carbon alkanes in the process of preparing long-chain alkanes from biomass derivatives The problem