Download Reaction Pathways and Mechanisms in Thermocatalytic Biomass by Marcel Schlaf, Z. Conrad Zhang PDF
By Marcel Schlaf, Z. Conrad Zhang
Volume I generally specializes in the present knowing of the response pathways and mechanisms concerned with a number of vital catalytic conversions of cellulose and carbohydrates. It begins with nanoscale illustrations of biomass constructions and describes a variety of reactions together with cellulose depolymerization to sugars, catalytic aldose-ketose isomerization and dehydration, selective oxidation, hydrogenolysis of cellulose and sugars, and the conversion of brief carbohydrates. The specificity and serve as of alternative catalysts and response media relating to the catalytic performances for those reactions are mentioned with major mechanistic details.
Marcel Schlaf, PhD, is a Professor on the division of Chemistry, college of Guelph, Canada.
Z. Conrad Zhang, PhD, is a Professor on the Dalian Institute of Chemical Physics, chinese language Academy of Sciences, China.
Read Online or Download Reaction Pathways and Mechanisms in Thermocatalytic Biomass Conversion I: Cellulose Structure, Depolymerization and Conversion by Heterogeneous Catalysts PDF
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Additional info for Reaction Pathways and Mechanisms in Thermocatalytic Biomass Conversion I: Cellulose Structure, Depolymerization and Conversion by Heterogeneous Catalysts
Sample text
Rather than summarizing product yields from such sugars and reported catalysts for the conversions, the focus lies on understanding the underlying mechanisms. These short carbohydrates can lead to a broad spectrum of products, ranging from platform chemicals such as lactic acid and ethylene glycol to high-value chemicals such as α-hydroxy-γbutyrolactone and even fuels. Different synthesis strategies of these short carbohydrates include (1) a top-down approach from mono- or polysaccharides and (2) a selective bottom-up synthesis route from formaldehyde.
With thioglycerol or benzylmercaptan. With thioglycerol, the hydrophilicity of the polymer increased significantly, proving the value of these new accessible building blocks to obtain new renewable polyesters and properties. The general strategy is shown schematically for MVG in Fig. 11. 3 Advances in the Conversion of Short-Chain Carbohydrates: A Mechanistic Insight 39 Fig. 11 The strategy of tuning PLA properties by incorporating functional C4-α-hydroxy acids in the PLA backbone via copolymerization, as demonstrated by [40] Fig.
The GLC to lactate conversion can also be pursued in a one-pot approach, by using two catalytic functions. This cascade is presented in Fig. 6. , Au-Pt on TiO2 or CeO2) in the presence of a base [83–86]. Here, the supported metal is the active site for the oxidation of GLC, whereas the base catalyzes lactic acid formation in the form of a salt. In the presence of bases, LA is formed via rehydration of PAL by the action of hydroxide ions, 3 Advances in the Conversion of Short-Chain Carbohydrates: A Mechanistic Insight 35 Fig.