scholarly journals Kinetics of Vapor Phase Reaction between Ethylene and Acetic Acid over Porous Ion-Exchange Resin Catalyst

1969 ◽  
Vol 72 (9) ◽  
pp. 1949-1953
Author(s):  
Yuichi MURAKAMI ◽  
Tatsuhiko HATTORI ◽  
Hiroshi UCHIDA
Keyword(s):  
Acetic Acid ◽  
Ion Exchange ◽  
Vapor Phase ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Phase Reaction ◽  
Resin Catalyst ◽  
Vapor Phase Reaction ◽  
Kinetics Of

scholarly journals Ion-exchange-resin-catalyzed adamantylation of phenol derivatives with adamantanols: Developing a clean process for synthesis of 2-(1-adamantyl)-4-bromophenol, a key intermediate of adapalene

2012 ◽  
Vol 8 ◽  
pp. 227-233 ◽  
Author(s):  
Nan Wang ◽  
Ronghua Wang ◽  
Xia Shi ◽  
Gang Zou
Keyword(s):  
Acetic Acid ◽  
Ion Exchange ◽  
Sulfonic Acid ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Phenol Derivatives ◽  
Resin Catalyst ◽  
Acid Resin ◽  
Free Process ◽  
Sulfonic Acid Resin

A clean process has been developed for the synthesis of 2-adamantylphenol derivatives through adamantylation of substituted phenols with adamantanols catalyzed by commercially available and recyclable ion-exchange sulfonic acid resin in acetic acid. The sole byproduct of the adamantylation reaction, namely water, could be converted into the solvent acetic acid by addition of a slight excess of acetic anhydride during the work-up procedure, making the process waste-free except for regeneration of the ion-exchange resin, and facilitating the recycling of the resin catalyst. The ion-exchange sulfonic acid resin catalyst could be readily recycled by filtration and directly reused at least ten times without a significant loss of activity. The key intermediate of adapalene, 2-(1-adamantyl)-4-bromophenol, could be produced by means of this waste-free process.

Kinetics of mixed succinic acid/acetic acid esterification with Amberlyst 70 ion exchange resin as catalyst

2012 ◽  
Vol 188 ◽  
pp. 98-107 ◽  
Author(s):  
Alvaro Orjuela ◽  
Abraham J. Yanez ◽  
Arati Santhanakrishnan ◽  
Carl T. Lira ◽  
Dennis J. Miller
Keyword(s):  
Acetic Acid ◽  
Ion Exchange ◽  
Succinic Acid ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Kinetics Of ◽  
Acid Esterification ◽  
Amberlyst 70

Kinetics of Synthesis of Perfumery Grade p-tert-Butylcyclohexyl Acetate Over Ion Exchange Resin Catalyst

2003 ◽  
Vol 1 (1) ◽  
Author(s):  
Ganapati D. Yadav ◽  
Ambareesh D. Murkute
Keyword(s):  
Ion Exchange ◽  
Heterogeneous Catalysts ◽  
Exchange Resin ◽  
Environmental Concern ◽  
Ion Exchange Resin ◽  
Isobutyric Acid ◽  
Transfer Resistance ◽  
Amberlyst 15 ◽  
Resin Catalyst ◽  
Kinetics Of

Esterification reactions are conventionally carried out by using homogeneous acids on industrial scale and only a few heterogeneous catalysts are reported. Esters represent an imperative class of aroma compounds. They often possess fruity odors and are widely used by the food and fragrance industries. In view of stringent environmental concern the use of heterogeneous catalysts is now heavily pursued. In order to develop environmentally benign process, the present work hinges on importance of Amberlyst-15 (an ion exchange resin) in the esterification of p-tert-butylcyclohexanol (PTBCH) with acetic acid to get p-tert-butylcyclohexyl acetate (PTBCHA) including kinetics of the reaction. PTBCHA has a sweet, almost creamy-woody odour with a soft-floral undertone. PTBCHA is expensive and is widely used in perfumery industry. The effects of various parameters on rate of reaction were studied in detail and a model was developed for an intrinsically kinetically controlled reaction which is free from either intra-particle diffusion or external mass transfer resistance. The catalyst is reusable without loss of activity. Esterification of PTBCH was also carried with propionic acid, isobutyric acid, pentanoic acid and hexanoic acid to study the effect of chain length and also because of their commercial significance.

Kinetics of the Vapor Phase Reaction of Mercury and Halogens

1936 ◽  
Vol 58 (10) ◽  
pp. 1922-1924 ◽  
Author(s):  
Richard A. Ogg ◽  
Henry C. Martin ◽  
Philip A. Leighton
Keyword(s):  
Vapor Phase ◽  
Phase Reaction ◽  
Vapor Phase Reaction ◽  
Kinetics Of

Kinetics of the Vapor Phase Reaction of Cyclopropane with Iodine

1939 ◽  
Vol 7 (9) ◽  
pp. 736-748 ◽  
Author(s):  
Richard A. Ogg ◽  
W. J. Priest
Keyword(s):  
Vapor Phase ◽  
Phase Reaction ◽  
Vapor Phase Reaction ◽  
Kinetics Of
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