Synthesis of Diphenyl Carbonate via Transesterification Catalyzed by HMS Mesoporous Molecular Sieves Containing Heteroelements
✍ Scribed by Shuwen LUO; Tong CHEN; Dongshen TONG; Yi ZENG; Yongcheng LEI; Gongying WANG
- Book ID
- 104452761
- Publisher
- Elsevier Science
- Year
- 2007
- Weight
- 333 KB
- Volume
- 28
- Category
- Article
- ISSN
- 1872-2067
No coin nor oath required. For personal study only.
✦ Synopsis
Heteroelements-containing mesoporous molecular sieves Me-HMS (Me = the incorporated metal) were prepared by the hydrothermal synthesis method and used for the synthesis of diphenyl carbonate (DPC) by transesterification between dimethyl carbonate (DMC) and phenol. Low angle X-ray diffraction patterns showed that all samples have typical of hexagonal phase structure. Among all tested Me-HMS samples, Ti-HMS exhibited the best catalytic performance, and the activity was closely related to the intra-framework Ti species content. When the molar ratio of Ti/Si in sol-gel reached 1/30, the amount of intra-framework Ti species in Ti-HMS was closed to saturation, and the maximum phenol conversion of 31.4% and the transesterification selectivity of 99.9% were obtained.