نتایج جستجو برای: sapo

تعداد نتایج: 570  

2018
Magnus Mortén Łukasz Mentel Andrea Lazzarini Ilia A Pankin Carlo Lamberti Silvia Bordiga Valentina Crocellà Stian Svelle Karl Petter Lillerud Unni Olsbye

Substituting metals for either aluminum or phosphorus in crystalline, microporous aluminophosphates creates Brønsted acid sites, which are well known to catalyze several key reactions, including the methanol to hydrocarbons (MTH) reaction. In this work, we synthesized a series of metal-substituted aluminophosphates with AFI topology that differed primarily in their acid strength and that spanne...

2009
J Chorostowska-Wynimko J Zaleska M Chabowski A Szpechcinski J Zych P Rudzinski R Langfort T Orlowski K Roszkowski-Sliz

INTRODUCTION While adjuvant therapy of early-stage non-small-cell lung cancer (NSCLC) is widely accepted, literature data concerning neoadjuvant treatment provide contradictory results with both improved and unaffected survival rates. Also, data concerning potential effects of neo-adjuvant therapy on cellular level are scarce. OBJECTIVE The aim of present study was to analyze the effect of ch...

Journal: :Dalton transactions 2014
Tetsuya Kodaira Takuji Ikeda

Attempts have been made to load tellurium (Te) atoms into the one-dimensional nano-channels of microporous crystals of aluminophosphate AlPO4-5 and of aluminosilicate mordenites of the Na(+) form (Na-MOR) and the H(+)-form (H-MOR) at 673 K. The density of the atoms adsorbed was in the sequence 0 ∼ AlPO4-5 ≪ H-MOR < Na-MOR. AlPO4-5 provides a shallow potential of periodical charge fluctuation fo...

Journal: Gas Processing 2014

The process of ethylene production from ethane dehydrogenation is one of the interesting processes in the field of conversion the petroleum light gases to the valuable products. In this process, the outlet gaseous product is a combination of ethylene, ethane and hydrogen. Effective separation techniques are required for separation of ethylene from unreacted ethane. Here a new adsorbent approach...

Journal: :Crystals 2021

The formation of SAPO-5 molecular sieves is studied under hydrothermal conditions in the presence a new templating agent, 1-benzyl-2,3-dimethylimidazolium hydroxide ([bzmIm]OH). syntheses were carried out by varying synthesis parameters, viz. crystallization temperature, heating time and reactants molar composition (SiO2, Al2O3, P2O5, [bzmIm]+, H2O) order to investigate role each parameter on S...

Journal: :Catalysis Science & Technology 2022

In situ synchrotron infrared microspectroscopy on single crystals of SAPO-34 reveals that a carbene insertion mechanism is responsible for the first carbon–carbon bond formation from surface methoxy groups.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی شیمی 1393

به دلیل افزایش قیمت نفت خام و همچنین تقاضا برای الفین¬های سبک نظیر اتیلن و پروپیلن، تلاشهای بسیاری برای پیدا کردن روشهای جایگزین برای تولید الفینهای سبک از منابع دیگر از قبیل زغال سنگ و گاز طبیعی صورت گرفته است. همچنین با توجه به مصرف بازار، رشد تقاضا برای پروپیلن کمی سریع تر از اتیلن است. بنابراین تولید حاضر پاسخگوی نیاز آینده نیست. تبدیل متانول به الفین یک فرایند بدیع برای این منظور است. متان...

Journal: :Catalysis Science & Technology 2021

Cu-SAPO-34 (Cu-CZC) and Fe-mordenite (Fe-MOR) their mechanical mixture (50 : 50) have been exhaustively investigated by means of operando X-ray absorption spectroscopy under NH3-SCR conditions.

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