Decomposition of polyoxymethylene dimethyl ethers and synthesis of bisphenol F

作者：Wang, Hui; Shen, Jianyi^*

来源：Catalysis Today, 2017, 298: 263-268.

DOI：10.1016/j.cattod.2017.01.041

• Polyoxymethylene dimethyl ethers (PODEn)
• Decomposition
• Effect of water
• Synthesis of bisphenol F

The decomposition of polyoxymethylene dimethyl ethers (PODEn) with and without the presence of water was investigated. Without water, the products from the decomposition of PODEn (n = 25) contained smaller (PODEn(-i)) and larger (PODEn (+ i)) homologues that followed the Schulz-Flory rule. However, the products from the decomposition of PODEn (n = 15) in water contained only formaldehyde (FA), methanol and dimethoxymethane without any other PODEn (+/- i). The reaction kinetics showed that the decomposition of PODEn in water was pseudo-zeroth order with respect to PODEn. The rate constants with pre-exponential factors and apparent activation energies were obtained for the decomposition reactions in water. Based on the above results, PODEn (n = 15) were used as reactants to react with phenol for the synthesis of bisphenol F (BPF) catalyzed by phosphoric acid. PODE2 was found to be better than FA for the synthesis of BPF with the improved yield and selectivity.

• 出版日期2017-12-1
• 单位南京大学