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International Journal of Nanoscience and Nanotechnology (IJNN)، جلد ۱۰، شماره ۳، صفحات ۱۷۱-۱۸۰
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عنوان انگلیسی Preparation of H-ZSM-5 Nano-Zeolite Using Mixed Template Method and its Activity Evaluation for ethanol to DME Reaction
چکیده انگلیسی مقاله H-ZSM-5 nano-zeolites were synthesized by hydrothermal method using tetrapropylammonium hydroxide (TPAOH) as a template in the presence of various TPABr concentrations. The effect of different TPABr/TPAOH molar ratios was studied on the catalytic performance of dehydration of methanol to dimethyl ether (DME) in a fixed bed reactor under the same operating conditions (T=300°C, P=1 atm, and WHSV=26 h−1). The prepared catalysts were characterized by XRD, SEM, BET and NH3-TPD. The characterization results showedthat the crystal sizes of the catalysts enlarge by increasing the concentration of TPABrin the synthesis reaction mixture. It was observed that H-form zeolite catalysts were active and selective for DME synthesis. These catalysts showed a high methanol conversion and also very high DME selectivity. It was found that by addition of up to 10 mole% TPABr in the synthesis reaction mixture, no significant effect was observed on the physical and chemical properties and catalytic activity of prepared catalysts.
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نویسندگان مقاله s عباسیان |
chemical engineering department, babol university of technology, babol, i. r. iran

m تقی زاده |
chemical engineering department, babol university of technology, babol, i. r. iran

نشانی اینترنتی http://www.ijnnonline.net/article_9097_883f0ab35db372ca7b19c940f3131d69.pdf
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