Heterogeneous Catalytic Transfer Hydrogenation Research Articles

Vapour-phase heterogeneous catalytic transfer hydrogenation of alkyl methyl ketones on MgO: Prevention of the deactivation of MgO in the presence of carbon tetrachloride

Catalytic transfer hydrogenation (henceforth abbreviated CTH) of alkyl methyl ketones (2-butanone, 2-pentanone and 2-hexanone) by 2-propanol was studied on a commercially available MgO catalyst. Pretreatment of MgO, deactivation of the catalyst, temperature dependence of CTH and the effects of the 2-propanol/ketone ratio and of various catalyst modifiers were investigated. An important result of these studies is that the deactivation of MgO may be prevented by treatment with carbon tetrachloride. As a consequence, vapor-phase CTH using commercially available MgO may be economically realized.

Hydrogenation of styrene-butadiene rubber by hydrogen transfer from limonene

The heterogeneous catalytic transfer hydrogenation of styrenebutadiene rubber (SBR) by the use of limonene as hydrogen source and as solvent in the presence of Pd/C as catalyst has been studied. The influence of the heating time on the reduction and on the structure of the donor was studied. Partial hydrogenations of the olefinic bonds of SBR are obtained when a mixture of limonene, SBR and 10% Pd/C is refluxed with vigorous stirring for 50–200 minutes.

ChemInform Abstract: Heterogeneous Catalytic Transfer Hydrogenation Reactions of 4‐Nitrodiphenylamine.

ChemInformVolume 21, Issue 30 Preparative Organic Chemistry ChemInform Abstract: Heterogeneous Catalytic Transfer Hydrogenation Reactions of 4-Nitrodiphenylamine. A. A. BANERJEE, A. A. BANERJEE Alchemie Res. Cent., Thane-400601, IndiaSearch for more papers by this authorD. MUKESH, D. MUKESH Alchemie Res. Cent., Thane-400601, IndiaSearch for more papers by this author A. A. BANERJEE, A. A. BANERJEE Alchemie Res. Cent., Thane-400601, IndiaSearch for more papers by this authorD. MUKESH, D. MUKESH Alchemie Res. Cent., Thane-400601, IndiaSearch for more papers by this author First published: July 24, 1990 https://doi.org/10.1002/chin.199030097AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume21, Issue30July 24, 1990 RelatedInformation

Heterogeneous catalytic transfer hydrogenation reactions of 4-nitrodiphenylamine

A new method for the preparation of p-phenylenediamine analogues from 4-nitrodiphenylamine by transfer hydrogenation is described here. Two catalysts used here are Raney nickel and palladium supported on carbon. A class of amines could be prepared by using different alcohols or ketones with this technique. The steric effect of alcohols plays an important part in the product yield, with the final product yield decreasing with the bulkiness of the alcohol. Atomic absorption and XPS (X-ray photoelectron spectroscopic) studies on the Raney nickel catalyst indicate that increasing aluminium content in the final catalyst by modifying the catalyst preparation conditions increases the final product yield. Palladium is found to be more active than Raney nickel for this transfer hydrogenation reaction. Both catalysts are compared by kinetics and modelling studies. The rate constants and activation energies for the reaction are determined by fitting the simulation to the experimental data.

Heterogeneous catalytic transfer hydrogenation of 4-nitrodiphenylamine to p-phenylenediamines

p-Phenylenediamine analogues have been prepared from 4-nitrodiphenylamine (1) by catalytic transfer hydrogenation in one stage; the process can be extended to the general condensation of a nitro compound with an alcohol (with Raney nickel as catalyst) or a ketone (with palladium as catalyst).

ChemInform Abstract: Cleavage of Aryl Benzyl Ethers by Heterogeneous Catalytic Transfer Hydrogenation.

AbstractThe ether (I) can easily be debenzylated when subjected to the reaction conditions A) or B).

ChemInform Abstract: HETEROGENEOUS CATALYTIC TRANSFER HYDROGENATION AND ITS RELATION TO OTHER METHODS FOR REDUCTION OF ORGANIC COMPOUNDS

Chemischer InformationsdienstVolume 16, Issue 32 Reviews ChemInform Abstract: HETEROGENEOUS CATALYTIC TRANSFER HYDROGENATION AND ITS RELATION TO OTHER METHODS FOR REDUCTION OF ORGANIC COMPOUNDS R. A. W. JOHNSTONE, R. A. W. JOHNSTONESearch for more papers by this authorA. H. WILBY, A. H. WILBYSearch for more papers by this authorI. D. ENTWISTLE, I. D. ENTWISTLESearch for more papers by this author R. A. W. JOHNSTONE, R. A. W. JOHNSTONESearch for more papers by this authorA. H. WILBY, A. H. WILBYSearch for more papers by this authorI. D. ENTWISTLE, I. D. ENTWISTLESearch for more papers by this author First published: August 13, 1985 https://doi.org/10.1002/chin.198532400Citations: 1AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article.Citing Literature Volume16, Issue32August 13, 1985 RelatedInformation

Heterogeneous catalytic transfer hydrogenation and its relation to other methods for reduction of organic compounds

Heterogeneous catalytic transfer hydrogenation and its relation to other methods for reduction of organic compounds