Obtainment of Sorbitol on Ferroalloy Promoted Nickel Catalysts

Kedelbaev Bs,Korazbekova Ku

doi:10.4172/2169-0022.1000224

Abstract

The systematic study of the activity of the catalyst suspended with ferroalloys additives in catalytic hydrogenation of glucose over a wide variation of process parameters is given in this article. Since nickel catalysts were studied sufficiently, we limited to the data of the phase composition and structure; specific surface of alloys and catalysts based on aluminum-nickel alloys, modified ferroalloys. Results of the study of phase, chemical, particle size distribution and structure of nickel alloys and catalysts have shown that modifying metals affect to the ratio of NiAl3/Ni2Al3 in the alloys, crush crystals, increase catalyst particle size, surface area and large size pore volume and simultaneously increase the micro- and supermicro pore ratio. Highly active, stable and selective catalysts based on nickel for the sorbitol synthesis process was developed.

Highlights

Liquid-phase hydrogenation of unsaturated compounds is a complex process consisting of several successive stages: transport of reactants to the catalyst surface and their subsequent adsorption, catalytic conversion on the surface, and desorption of the reaction products from the catalyst surface
We studied the effect of glucose concentration of the solution, the hydrogen pressure and temperature on the rate of hydrogenation of glucose
The hydrogenation rate is continuously increased with increasing glucose concentration up to 30% in glucose hydrogenation in the presence of skeletal nickel catalyst was found by Bizhanov [3]

Summary

Introduction

Liquid-phase hydrogenation of unsaturated compounds is a complex process consisting of several successive stages: transport of reactants to the catalyst surface and their subsequent adsorption, catalytic conversion on the surface, and desorption of the reaction products from the catalyst surface. Hydrogenation of the unsaturated compound can flow through one or other mechanism depending on the nature of the catalyst, solvent and reaction conditions [1,2]. In this connection, we studied the effect of glucose concentration of the solution, the hydrogen pressure and temperature on the rate of hydrogenation of glucose. A further increase in the concentration of glucose has practically no effect on the rate of reaction

Experimental Part

Findings

Conclusion