Journal
CHEMICAL ENGINEERING JOURNAL
Volume 377, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2018.09.115
Keywords
Stability; TS-1; Hydrophobicity; Hierarchical zeolite; Propene epoxidation
Categories
Funding
- National Natural Science Foundation of China [21606254]
- Key research and development plan of Shandong Province, China [2017GSF17126]
- Fundamental Research Funds for the Central Universities, China [18CX02014A, 18CX02130A]
- Independent innovation foundation of Qingdao, China [17-1-1-18-jch]
- Young talent programe of Shandong
- Chambroad Chemical Industry Research Institute CO., LTD.
Ask authors/readers for more resources
Designing highly efficient Au/Ti-containing catalysts for propene epoxidation with H-2 and O-2 harbors tremendous scientific and industrial importance. In this work, novel hydrophobic hierarchical TS-1 (HTS-1) with wormhole-like mesopores (ca. 45 nm) and small crystal size (100 nm) is firstly synthesized by a two-step crystallization method using CTAB as template. Gratifyingly, the Au/HTS-1 catalyst shows simultaneously high PO formation rate of 150 g(Po)h(-1)kg(Ca)t(-1) without any promoter additive, PO selectivity of 90% and impressive stability of 100 h, which are much better than traditional Au/TS-1 catalyst. Furthermore, the intrinsic reason for the enhanced performance is elucidated by multi-techniques such as N-2 physisorption, HRTEM, TGA, FT-IR and Si-29 NMR. Interestingly, it is found that the coke in 0.10 wt% Au/HTS-1 catalyst partly reside in mesopores, alleviating the deactivation of micropore blocking. Moreover, the enhanced mass transfer ability and higher hydrophobicity of Au/HTS-1 catalyst also lead to reduced coke weight and absence of aromatic coke.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available