Bulletin of the Korean Chemical Society

  • 제23권8호
  • /
  • Pages.1103-1105
  • /
  • 2002
  • /
  • 0253-2964(pISSN)
  • /
  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
권호 표지
DOI QR코드

DOI QR Code

Modification of H-ZSM-5 and γ-Alumina with Formaldehyde and Its Application to the Synthesis of Dimethyl Ether from Syn-gas

  • 발행 : 2002.08.20
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

H-ZSM-5 and γ-alumina were treated with formaldehyde and sodium carbonate. The treatment increased the amounts of weak acid sites, removing strong acid sites. The maximum temperature of weak acid sites in their ammonia TPD spectra shifted in the direction of high temperature. The modified H-ZSM-5 and g-alumina were mixed with the methanol synthesis catalyst to perform dimethyl ether synthesis from syn-gas. The modified catalysts showed better selectivity to dimethyl ether, minimizing the reforming reaction to carbon dioxide. The maximum yield of 53.3% to dimethyl ether was achieved under the reaction conditions of 54.4 atm, 523 K, and the feed rate of 4500 Lhr-1 .gcat-1.

키워드

참고문헌

  1. Van Hooff, J. H. C.; Roelofsen, J. W. Stud. Surf. Sci. Catal. 1990,58, 241.
  2. Reschetilowski, W.; Unger, B.; Wendlandt, K. P. J. Chem. Soc.Farad. Trans. 1989, 85, 2941. https://doi.org/10.1039/f19898502941
  3. Woolery, G. L.; Kuehl, G. H.; Timken, H. C.; Chester, A. W. Proc.11th International Zeolite Conference; RP 61, 1996.
  4. Timken, H. C.; Kuehl, G. H. Proc. 11th International ZeoliteConference; RP 62, 1996.
  5. Kwak, B. S.; Sachtler, W. M. H. J. Catal. 1994, 145, 456. https://doi.org/10.1006/jcat.1994.1056
  6. Mastoshi, N.; Kenji, K.; Shinzo, O. Catal. Today 1997, 35, 393. https://doi.org/10.1016/S0920-5861(96)00214-3
  7. Paul, K.; Herwig, O. SAE Technical Paper 950062; 1995.
  8. John, B. H.; Bodil, V.; Finn, J.; Inga, D. S. SAE Technical Paper950063; 1995.
  9. James, J. S. Chem. Eng. Comm. 1991, 110, 123. https://doi.org/10.1080/00986449108939946
  10. Li, J. L.; Zhang, X. G.; Inui, T. Appl. Catal. A: General 1996, 147,23. https://doi.org/10.1016/S0926-860X(96)00208-6
  11. Allan, S.; Lyngby, J. R.; Rostrup-Nielsen, V. U. S. Patent 4,520,216, 1985.
  12. Fujimoto, K.; Asami, K.; Shikada, T.; Tominaga, H. Chem. Lett.1984, 2051.

피인용 문헌

  1. Bifunctional Catalysts vol.25, pp.6, 2011, https://doi.org/10.1021/ef200504p
  2. Effect of Torrefaction on Bio-oil Upgrading over HZSM-5. Part 1: Product Yield, Product Quality, and Catalyst Effectiveness for Benzene, Toluene, Ethylbenzene, and Xylene Production vol.27, pp.2, 2013, https://doi.org/10.1021/ef301694x
  3. Effect of Torrefaction on Bio-oil Upgrading over HZSM-5. Part 2: Byproduct Formation and Catalyst Properties and Function vol.27, pp.2, 2013, https://doi.org/10.1021/ef301695c
  4. Influence of Montmorillonite K10 Modification with Tungstophosphoric Acid on Hybrid Catalyst Activity in Direct Dimethyl Ether Synthesis from Syngas vol.144, pp.11, 2014, https://doi.org/10.1007/s10562-014-1359-5
  5. Catalyst and Alkaline Earth Oxide-Modified HZSM-5 Zeolite vol.2, pp.11, 2014, https://doi.org/10.1002/ente.201402071
  6. Impregnation to Enhance Methanol Dehydration Activity vol.38, pp.3, 2017, https://doi.org/10.1002/bkcs.11081
  7. Effect of pressure on direct synthesis of DME from syngas over metal-pillared ilerites and metal/metal-pillared ilerites vol.25, pp.3, 2008, https://doi.org/10.1007/s11814-008-0079-1
  8. Synthesis of Dimethyl Ether over Modified H-Mordenite Zeolites and Bifunctional Catalysts Composed of Cu/ZnO/ZrO2 and Modified H-Mordenite Zeolite in Slurry Phase vol.129, pp.1-2, 2009, https://doi.org/10.1007/s10562-008-9779-8
  9. One-Step Synthesis of Dimethyl Ether from Syngas with Fe-Modified Zeolite ZSM-5 as Dehydration Catalyst vol.98, pp.4, 2002, https://doi.org/10.1007/s10562-004-8686-x
  10. Highly effective hybrid catalyst for the direct synthesis of dimethyl ether from syngas with magnesium oxide-modified HZSM-5 as a dehydration component vol.230, pp.1, 2005, https://doi.org/10.1016/j.jcat.2004.12.007
  11. The direct synthesis of dimethyl ether from syngas over hybrid catalysts with sulfate-modified γ-alumina as methanol dehydration components vol.250, pp.1, 2002, https://doi.org/10.1016/j.molcata.2006.01.053
  12. Development of Heterogeneous Catalysts for Dehydration of Methanol to Dimethyl Ether: A Review vol.11, pp.1, 2019, https://doi.org/10.1134/s2070050419010045