Conversion to Aromatic Hydrocarbons Over Nano- and Micro-Sized Particle La/Zn/HZSM-5 Catalysts
- Authors
- Kim, Han-Gyu; Yang, Yoon-Cheol; Jeong, Kwang-Eun; Kim, Tae-Wan; Chae, Ho-Jeong; Jeong, Soon-Yong; Kim, Chul-Ung; Lee, Kwan-Young
- Issue Date
- 1월-2015
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Ethanol; Aromatics; Zeolite; Template; Zinc; Lanthanum
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.15, no.1, pp.583 - 586
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 15
- Number
- 1
- Start Page
- 583
- End Page
- 586
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/94801
- DOI
- 10.1166/jnn.2015.8356
- ISSN
- 1533-4880
- Abstract
- The effect of the template of HZSM-5 and its synthesis method on the catalytic conversions of ethanol to aromatic hydrocarbons has been investigated over a 0.8%Zn/0.6%La/HZSM-5 (Si/Al-2 = 50) catalyst in a fixed-bed flow reactor under operating conditions of T = 710 K, P = 1 bar, and WHSV = 0.8 hr(-1). Nano- and micro-size HZSM-5 were prepared by hydrothermal and microwave synthesis with different templates: TPAOH, TPABr, and HMDA. Zinc and lanthanum modified HZSM-5 catalysts were prepared by a simple co-impregnation method. It was found that the size of the particles and the crystal structure of HZSM-5 were influenced by the template type and synthesis method. When using the TPAOH template, the nano-sized particles were prepared by microwave synthesis, whereas HZSM-5 prepared from TPABr and HMDA by a hydrothermal method, were composed of cubic shaped nanocrystals inside a micro-sized particle. The effect of the template on the selectivity to aromatics over a La/Zn/HZSM-5 catalyst was shown as follows: HMDA > TPABr > TPAOH.
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