ISOBUTYL CARBONATE synthesis
- Product Name:ISOBUTYL CARBONATE
- CAS Number:539-92-4
- Molecular formula:C9H18O3
- Molecular Weight:174.24
Yield: 92%
Reaction Conditions:
with 70percent zinc oxide, 15percent aluminum oxide, 14percent lanthanum oxide, 1percent cerium oxide, reducing by hydrogen at 120; under 30003 Torr; for 1 h;Large scale;
Steps:
6.II Embodiment 6 Producing diisobutyl carbonate from 1, 4-pentanediol carbonate and isobutanol II. Ester exchange reaction
II. Ester exchange reaction Adding 1 kg 1,4-pentanediol carbonate and 2.28kg isobutanol in a tubular ester exchange reactor; then adding 6.56g prepared metal-rare earth oxide composite catalyst, uniformly mixing and performing an ester exchange reaction, following distilling the reaction product to obtain diisobutyl carbonate, wherein the mole ratio of 1,4-pentanediol carbonate to isobutanol is 1: 4, and the weight ratio of the metal-rare earth oxide composite catalyst to the total weight of the 1,4-pentanediol carbonate and isobutanol is 0.2: 100; the ester exchange reaction is performed at a temperature of 120 °C and under an absolute pressure of 4MPa for 60 minutes; in the ester exchange reaction, the conversion rate of 1,4-pentanediol carbonate is 98%, and yield of diisobutyl carbonate is 92%.
References:
Beijing Jinjiao Biomass Chemical Industry Co., Ltd;JIE, Erwang;ZHANG, Wei EP2664608, 2013, A1 Location in patent:Paragraph 0101
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