Acetone condensation on a cation exchange resin catalyst: the pseudo equilibrium phenomenon

2004 ◽  
Vol 59 (22-23) ◽  
pp. 5545-5550 ◽  
Author(s):  
Elizabeth du Toit ◽  
Renier Schwarzer ◽  
Willie Nicol
Keyword(s):  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Resin Catalyst ◽  
Acetone Condensation

Synthesis of High-Purity Methylal by Reactive and Extractive Distillation

2015 ◽  
Vol 723 ◽  
pp. 629-632
Author(s):  
Ji Quan Liu ◽  
Peng Wang
Keyword(s):  
Cation Exchange ◽  
High Purity ◽  
Distillation Column ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Extractive Distillation ◽  
Molar Ratio ◽  
Reflux Ratio ◽  
Optimum Conditions ◽  
Resin Catalyst

The process for production high-purity methylal, which used methanol and formalin in the presence of cation-exchange resin catalyst, was investigated in the reactive and extractive distillation column. Effect of feed mole ratio of formaldehyde in the extracting and reacting section, molar ratio of methanol and formaldehyde, reflux ratio on the content of methylal in the distillate were investigated. The results show that the purity of methylal can reach 99.1% under the optimum conditions.

scholarly journals Synthesis of 1,4-Dioxan-2-one from 1,3-Dioxolane and Carbon Monoxide over Cation-exchange Resin Catalyst.

2001 ◽  
Vol 44 (2) ◽  
pp. 131-134
Author(s):  
Hiroyuki TAKAGI ◽  
Yasunori OUMI ◽  
Toshiya UOZUMI ◽  
Takashi MASUDA ◽  
Tsuneji SANO
Keyword(s):  
Carbon Monoxide ◽  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Resin Catalyst

scholarly journals Activity of some disiloxanes toward the cation exchange resin-catalyst in the siloxane equilibration reaction

2000 ◽  
Vol 65 (9) ◽  
pp. 639-643 ◽  
Author(s):  
M.N. Govedarica
Keyword(s):  
Reaction Time ◽  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Resin Catalyst

The relative activities of four disiloxanes toward the cation exchange resin, which was used as an equilibration catalyst, were determined in such a way that the equilibrium initially present in an arbitrary chosen equilibrate was disturbed by adding the respective disiloxanes to it, and then by recording the viscosity of the equilibrating mixtures as a function of reaction time. As a result, a set of different viscosity-reaction time relationships was obtained, which implies different activities of disiloxanes toward the catalyst. In this way the following decreasing order of acitivites was established: 1,3-tetramethyldisiloxane > 1,3-divinyltetramethyldisiloxane > hexamethyldisiloxane > 1,3-bis(3-carboxypropyl)tetramethyldisiloxane.

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