دورية أكاديمية
Synthesis of SAPO-34/ZSM-5 Composite and Its Catalytic Performance in the Conversion of Methanol to Hydrocarbons
العنوان: | Synthesis of SAPO-34/ZSM-5 Composite and Its Catalytic Performance in the Conversion of Methanol to Hydrocarbons |
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المؤلفون: | Li, Liping, Cui, Xiaojing, Li, Junfen, Wang, Jianguo |
المصدر: | Journal of the Brazilian Chemical Society. February 2015 26(2) |
بيانات النشر: | Sociedade Brasileira de Química, 2015. |
سنة النشر: | 2015 |
مصطلحات موضوعية: | SAPO-34, ZSM-5, composites, methanol-to-hydrocarbons, hydrothermal synthesis |
الوصف: | SAPO-34/ZSM-5 composite was synthesized with nano-sized ZSM-5 zeolite as seeds and characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen sorption, Fourier transform infrared (FTIR) and temperature-programmed desorption of ammonia (NH3-TPD); its catalytic performance in the conversion of methanol to hydrocarbons (MTH) was investigated. The results indicated that the as-synthesized SAPO-34/ZSM-5 composite takes the form of sphere-like particles with a diameter ranging from 2.3 to 4.8 µm, through the accumulation of tiny ZSM-5 and SAPO-34 crystals; a large quantity of mesopores was formed in the interspaces between the ZSM-5 and SAPO-34 crystals. Owing to its proper acidity and porosity, the SAPO-34/ZSM-5 composite exhibits higher stability in MTH and favors the formation of aromatics and alkanes, compared with the parent SAPO-34 and ZSM-5 zeolites and their mechanical mixture. |
نوع الوثيقة: | article |
وصف الملف: | text/html |
اللغة: | English |
تدمد: | 0103-5053 |
DOI: | 10.5935/0103-5053.20140279 |
الوصول الحر: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015000200290Test |
حقوق: | info:eu-repo/semantics/openAccess |
رقم الانضمام: | edssci.S0103.50532015000200290 |
قاعدة البيانات: | SciELO |
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