Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Conversion of Methanol to Hydrocarbons over Heteropoly Acids(II)

헤테로폴리산 촉매에 의한 탄화수소로의 메탄올 전환반응(II)

  • Hong, Seong-Soo (Dept. of Chemical Engineering, Pusan National University of Technology) ;
  • Lim, Ki-Chul (Science and Technology Policy Institute) ;
  • Lee, Ho-In (Dept. of Chemical Technology, College of Engineering, Seoul National University)
  • Received : 1993.01.18
  • Accepted : 1993.04.12
  • Published : 1993.05.01
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Abstract

In the conversion of methanol, the effect of acide property of heteropoly compounds on the catalytic activity was investigated. The pretreatment of Cu-exchanged 12-tungstophosphoric acid with hydrogen enhanced both the selectivity for propane and the conversion of methanol, and the pretreatment of Al-exchanged 12-tungstophosphoric acid with water enhanced the acid strength of the catalyst. The water added into the reactant decreased the conversion of methanol, while the pretreatment temperature did not affect it but the propylene/propane ratio. Various partially-substituted Al salts of 12-tungstophosphoric acid showed different catalytic activities depending on the degree of Al-substitution.

메탄올 전환반응에서, 헤테로폴리산 화합물의 산특성이 촉매활성에 미치는 영향에 대하여 연구하였다. 구리로 치환된 12-텅스토인산 촉매를 수소로 전처리하면 메탄올의 전환율과 프로판에 대한 선택도가 증가하였으며, 알루미늄이온으로 치환된 12-텅스토인산 촉매에서는 물로 전처리하면 산의 세기가 증가하였다. 반응물에 첨가된 물은 메탄올의 전환율을 감소시켰고, 전처리온도는 메탄올의 전환율에는 영향을 미치지 않았으나, propylene/propane의 생성비에는 영향을 미쳤다. 알루미튬이온에 의해 부분적으로 이온교환된 여러 가지의 12-텅스토인산염들은 알루미늄이온의 치환정도에 따라 서로 다른 촉매활성을 보여주었다.

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Acknowledgement

Supported by : 한국학술진흥재단