نتایج جستجو برای: nano zsm 5

تعداد نتایج: 1262646  

Journal: :Chemistry 2022

Zeolites have been successfully applied as catalysts in the pyrolysis of plastics to obtain valuable lower molecular weight hydrocarbon compounds. In present work, mordenite was directly synthesized and chemically modified from commercial increase pore volume. For first time, performance these mordenites compared with that an alkali-treated ZSM-5 for assisting simulated urban plastic waste. The...

 زمینه و هدف:  ترکیبات آلی فرار  آلاینده های مهمی هستند که به دلیل داشتن اثرات جدی بر سلامتی نیروی کار،مورد توجه بوده اند.تولوئن  اثرات فیزیولوژیک و عصبی سوئی را بر جای می گذارد، از این رو کنترل این آلاینده از اهمیت بالایی برخوردار می باشد. هدف از این مطالعه بررسی  ظرفیت جذب و خصوصیات جذبی زئولیت ZSM-5  برای جداسازی بخارات تولوئن از جریان هوا  می باشد. روش کار:  جهت مطالعه خصوصیات فیزیکی  و سطح...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1987

2014
Xuan Hoan Vu Reinhard Eckelt Udo Armbruster Andreas Martin

Ordered mesoporous SBA-15 analogs with different Si/Al ratios were successfully prepared in a two-step process from self-assembly of ZSM-5 nanoseeds at high temperature in mildly acidic media (473 K, pH 3.5). The obtained products were characterized as SAXS, XRD, N₂ sorption, FTIR, TEM, NH₃-TPD, AAS and ICP. The results show that the initial Si/Al molar ratio of ZSM-5 precursors strongly affect...

2016
Zoran Ristanović Alexey V. Kubarev Johan Hofkens Maarten B. J. Roeffaers Bert M. Weckhuysen

Visualizing proton-transfer processes at the nanoscale is essential for understanding the reactivity of zeolite-based catalyst materials. In this work, the Brønsted-acid-catalyzed oligomerization of styrene derivatives was used for the first time as a single molecule probe reaction to study the reactivity of individual zeolite H-ZSM-5 crystals in different zeolite framework, reactant and solven...

Journal: :Journal of The Energy Institute 2021

Catalytic fast co-pyrolysis of sewage sludge and sawdust was performed using Py/GC-MS for pyrolytic product upgrades. Metal oxides (NiO MoO3) ZSM-5 catalysts had been introduced into single catalytic pyrolysis. The combination NiO + MoO3 in mixed metal (MMOs) modified with under a dual-catalyst different layouts. In the pyrolysis process, specifically promoted formation phenols, ketones, furans...

Journal: :International journal of computational and experimental science and engineering 2023

Recently, zeolites attracted considerable research attention because they exhibit adsorption properties, ion exchange capabilities and a good catalytic property, specific pore size distribution; unique chemical thermal properties several applications. 
 Actually play crucial role as catalyst to capture convert Carbone dioxide into valuable products.
 In the present work, hydrothermal ...

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