Conversion to aromatic hydrocarbons over nano- and micro-sized particle La/Zn/HZSM-5 catalysts

Han Gyu Kim, Yoon Cheol Yang, Kwang Eun Jeong, Tae Wan Kim, Ho Jeong Chae, Soon Yong Jeong, Chul Ung Kim, Kwan Young Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)

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/Al2 = 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.

Original languageEnglish
Pages (from-to)583-586
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume15
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

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Keywords

  • Aromatics
  • Ethanol
  • Lanthanum
  • Template
  • Zeolite
  • Zinc

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

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