Effect of WO_x promoter on Pt/ZrO_2-HMS catalysts for n-heptane isomerization: Catalytic performance

• 作 者: Nastaran Parsafard Mohammad Hasan Peyrovi Nasibeh Parsafard
• 机 构: Faculty of Chemistry and Petroleum Sciences, Department of Petroleum Chemistry and Catalysis, Univer
• 出 处: Chinese Chemical Letters
• 发表日期: 2017年03期
• 关键词: kinetics promoter selectivity silica isomers desorption hydrocarbons cracking al

Platinated W/Zr mixed oxides supported on mesoporous silica with various amounts of Si/Zr, namely PtWO_3/ZrO_2([76_TD$IF]x)-HMS, were prepared and studied for n-heptane isomerization reaction at 200–350 C. The various methods such as XRD, XRF, FT-IR, UV–vis DRS, NH_3-TPD, H_2 chemisorption, nitrogen adsorption–desorption, Py-IR, SEM and TGA techniques were used for characterization of these materials. Kinetics of n-heptane isomerization was also investigated under various hydrogen. n-Heptane pressures and the influence of reaction conditions on catalytic performance were studied. The ideal catalytic performance was observed on HMS with 0.6%Pt/12%WO_3/ZrO_2 and Si/Zr = 10.

Platinated W / Zr mixed oxides supported on mesoporous silica with various amounts of Si / Zr, namely PtWO 3 / ZrO 2 ([76_TD $ IF] x) -HMS, were prepared and studied for n-heptane isomerization reaction at 200-350 C. The Various methods such as XRD, XRF, FT-IR, UV-vis DRS, NH 3 -TPD, H 2 chemisorption, nitrogen adsorption-desorption, Py-IR, SEM and TGA techniques were used for characterization of these materials. Kinetics of n-heptane The ideal catalytic performance was observed on HMS with 0.6% Pt / 12% WO_3 / ZrO_2 and Si / Zr = 10.