Jung, Heon Lee, Seong-Min Yang, Dae-Ryook Jung, Kwang-Deog 2024-01-20T07:30:52Z 2024-01-20T07:30:52Z 2021-09-05 2015-04 0253-2964 https://pubs.kist.re.kr/handle/201004/125589 The Cu/ZnO/Al2O3 catalysts with 13.0 and 30.6 m(2) Cu/g were designated as HM (highly active catalysts for methanol synthesis) and LM (low active catalysts for methanol synthesis), respectively. gamma-Al2O3 and eta-Al2O3 were designated as LD (low active catalysts for methanol dehydration) and HD (highly active catalysts for methanol dehydration), respectively. Four catalytic systems (LMLD, LMHD, HMLD, and HMHD) were prepared by admixing methanol synthesis catalysts and methanol dehydration catalysts. The syngas to dimethyl ether (DME) (STD) reaction was conducted at a GHSV of 6000 mL/g(cat)/h, 42 atm, and 250 degrees C. The activity of LMLD was almost same as that of LMDH, indicating that the activity of solid acid catalysts did not influence the STD reaction on the admixed catalysts using LM. On the other hand, the activity of HMHD was much higher than that of HMLD, indicating that the solid acid catalysts controlled the STD reaction on the admixed catalysts using HM. English WILEY-V C H VERLAG GMBH DIMETHYL ETHER SYNTHESIS SINGLE-STEP SYNTHESIS GAS SHIFT REACTION ADMIXED CATALYSTS ALTERNATIVE FUEL COPPER SURFACE ZINC-OXIDE CU/ZNO/AL2O3 DEHYDRATION GAMMA-AL2O3 Relative Roles of Methanol Synthesis and Solid Acid Catalysts in the Direct DME Synthesis from Syngas Article 10.1002/bkcs.10235 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.36, no.4, pp.1221 - 1225 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 36 4 1221 1225 scie scopus kci ART001981799 000353577900027 2-s2.0-84938546311 Chemistry, Multidisciplinary Chemistry Article DIMETHYL ETHER SYNTHESIS SINGLE-STEP SYNTHESIS GAS SHIFT REACTION ADMIXED CATALYSTS ALTERNATIVE FUEL COPPER SURFACE ZINC-OXIDE CU/ZNO/AL2O3 DEHYDRATION GAMMA-AL2O3 Direct DME synthesis Methanol synthesis Methanol dehydration Effects of Cu surface area