Production of Value added Chemicals from Low Cost Raw Materials: Utilization of Hydrogen Sulphide, Glycerol and Toluene in Heterogeneous Catalysis
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Description
The present study focuses on utilization of hydrogen sulphide (H2S), glycerol and toluene in the production of valuable chemicals. Hydrogen sulphide, a byproduct of petroleum and hydrocarbon processing industry, was used to produce chloroanilines by reduction of the corresponding chloronitrobenzenes. Glycerol, a cheap byproduct of biodiesel industry, was successfully converted to solketal, a useful transportation fuel additive, by heterogeneous ketalization with acetone, which is also a low-cost byproduct of cumene process for phenol. Toluene (T), having very less market demand compared to benzene (B) and xylene (X) (in petrochemical industry, BTX are produced by catalytic reforming of naphtha), was converted to benzene and xylene by disproportionation over a solid acid catalyst. Triphase catalysis has been used to produce nitrotoluenes by nitration of toluene without using sulphuric acid in an environment-friendly process.