By Olga A. Simakova
The booklet describes the valorization of biomass-derived compounds over gold catalysts.
Since biomass is a wealthy renewable feedstock for various platform molecules, together with these presently derived from petroleum, the curiosity in a variety of transformation routes has turn into excessive. Catalytic conversion of biomass is among the major ways to enhancing the commercial viability of biorefineries. moreover, Gold catalysts have been came upon to have impressive job and selectivity in lots of key reactions.
This e-book collects information regarding changes of the main promising and demanding compounds derived from cellulose, hemicelluloses, and woody biomass extractives. in view that gold catalysts own excessive balance below oxidative stipulations, selective oxidation reactions have been mentioned extra completely than different severe reactions comparable to partial hydrogenation, acetalization, and isomerization.
The impact of response stipulations, the function of the catalyst, and the benefits and downsides of utilizing gold are offered for the entire reactions pointed out above.
This ebook offers an outline of the new learn effects concentrating on program of gold catalysts for synthesis of precious chemical compounds utilizing renewable feedstocks.
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Additional info for Biomass Processing over Gold Catalysts
N. Y. Murzin, Appl. Catal. A 385, 136 (2010) Chapter 8 Gold Catalysts Stability In general, long-term stability of catalysts is required for industrial applications. One of the most important advantages with respect to gold catalysts is their stability in oxidizing atmospheres. Catalyst deactivation can be caused, however, by other reasons, such as catalyst surface reconstruction, leaching of the active phase, strong adsorption of organic molecules and poisoning by inorganic compounds. Despite large efforts to explore catalysis by gold for many applications, reusability of gold catalysts and origin of deactivation were investigated for only a few reactions.
Riisager, Green Chem. L. -B. Lou, J. -M. Liu, Y. -N. Fan, Chem—Eur. J. A. Corma, T. J. Sabater, Chem-Eur. J. H. Z. Su, J. Ni, Y. Y. N. Fan, Angew. Chem. Int. Ed. N. J. H. S. K. Hii, Green Chem. T. Ishida, R. Takamura, T. Takei, T. Akita, M. Haruta, Appl. Catal. S. L. Simakova, M. V. P. F. V. Simakov, D. Yu. Murzin, One-pot myrtenol amination over Au nanoparticles supported on different metal oxides. Appl. Catal. A (accepted). 013 Chapter 5 Selective Hydrogenation Reactions The direct hydrogenation of aldehydes (such as maleic anhydride) over copper chromite can be performed efficiently .
Larsson, A. -R. Leino, K. -P. Mikkola, Appl. Catal. A. G. Orloff, B. Winter, C. Fehr, in Perfumes Art Sciences and Technology, ed. by P. Muller, D. Lamparsky (Elsevier, New York, 1991) Chapter 7 Isomerization Reactions Despite that history of catalysis by gold started ca. 30 years ago, there are only few reports on isomerization reactions over supported gold. Some isomerizations include double bond migration in allylbenzene , skeletal rearrangements of propylene oxide to acetone , and cycloisomerization of γ-acetylinic carboxylic acids .