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Direct synthesis of dimethyl carbonate and propylene glycol using potassium bicarbonate as catalyst in supercritical CO2

100%

Wen Y., Zhang R., Cang Y., Zhang J., Liu L., Guo X., Fan B.

The improved one-pot synthesis of dimethyl carbonate and propylene glycol from propylene oxide, supercritical carbon dioxide, and methanol with potassium bicarbonate as the catalyst has been reported in this paper. As far as we know, it is the first time to use potassium bicarbonate only as the catalyst in the production process which is simple and cheap. Satisfactory conversion rate of propylene oxide and yield of the products could be achieved at the optimized conditions with quite a small amount of by-products. Our new method offers an attractive choice for the production of dimethyl carbonate in large-scale industry efficiently and environmental friendly.

The Influence of Urea on the KHCO3and NH4VO3Solubility in the KHCO3+ NH4VO3+ H2O System

86%

Kiełkowska U., Trypuć M., Mazurek K., Drużyński S.

Polish Journal of Chemical Technology

2007

vol. 9

issue 2

23-26

The influence of urea on the vanadium(V) and potassium ion concentrations in the KHCO3 + NH4VO3 + H2O system was determined in the temperature range of 293 K to 303 K. Additionally, the solution density dependence versus the urea concentration was presented. These data are essential for the assessment of optimum operating conditions for the new production process of potassium carbonate.

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2 Polish Journal of Chemical Technology

1 2015

1 2007

1 Cang Y.

1 Drużyński S.

1 Fan B.

1 Guo X.

1 Kiełkowska U.

1 Liu L.

1 Mazurek K.

1 Trypuć M.

1 Wen Y.

1 Zhang J.

1 Zhang R.

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Direct synthesis of dimethyl carbonate and propylene glycol using potassium bicarbonate as catalyst in supercritical CO2

The Influence of Urea on the KHCO3and NH4VO3Solubility in the KHCO3+ NH4VO3+ H2O System