نتایج جستجو برای: sapo
تعداد نتایج: 570 فیلتر نتایج به سال:
BACKGROUND This paper demystifies clinical perception by explaining its mechanisms, using insights from neuroscience and evolutionary biology. Clinical diagnosis begins with rapid recognition using our imaging, perceptual (but non-verbal) brain, followed by guided search using our slower, verbal, reasoning brain. Experiential cognition can be (more or less) achieved by integrating these two way...
The adequate configuration and the effect of reduction was studied for In2O3-ZrO2/SAPO-34 catalyst with aim improving its performance (activity selectivity in pseudo-steady state) hydrogenation CO, CO2 CO2/CO (COx) mixtures into olefins. experiments were carried out a packed bed reactor at 400 °C; 30 bar; H2/COx ratio 3; CO2/COx ratios 0, 0.5 1; space time (referred to as In2O3-ZrO2 mass) 3.35 ...
The dynamics of retained and deactivating species in a SAPO-18 catalyst during the methanol-to-olefins reaction have been followed using combination ex-situ in-situ techniques differential integral reactors.The were analyzed extraction, FTIR UV-vis spectroscopies combined with online product analysis (gas chromatography mass spectrometry). composition extracted soluble was determined gas chroma...
الفین¬های سبک نظیر اتیلن، پروپیلن و بوتیلن خوراک اصلی صنعت پتروشیمی است و عمدتا از منابع نفتی تولید می شود. با توجه به رشد نیاز صنعت به الفین¬های سبک و کمبود منابع نفتی در آینده، فرآیند تبدیل متانول به الفین¬ها (mto) با استفاده از منبعی غیر¬نفتی به عنوان روشی جایگزین مورد توجه قرار گرفته است. در این پایان¬نامه برای بررسی اثر پارامترهای دما و زمان تبلور، در سنتز کاتالیست sapo-34 ، به تعداد 9 نمو...
فرآیندهای تبدیل متانول به اولفین ها، بخاطر بازار مصرف اتیلن و پروپیلن و استفاده از مواد اولیه غیر نفتی مورد توجه قرار گرفته اند. کاتالیست های استفاده شده در این فرآیند، انواع مختلف زئولیت ها با خاصیت اسیدی و شکل انتخابی هستند که از بین آنها، sapo-34 با ساختارcha بهترین نتایج را بدست داد. در تحقیق حاضر کاتالیست های sapo-34 بروش آب گرمایی و با بکارگیری قالب تترااتیل آمونیوم هیدروکساید سنتز گردیدن...
Fine particles Silicoaluminophosphate-34 were synthesized by hydrothermal sol-gel method. The effect of crystallization time, as one of the important synthesis factors on particle size and crystallinity, kinetic and equilibrium adsorption, and selectivity of CO2 / CH4 has been studied in this work. The adsorption isotherms are obtained at mod...
OBJECTIVE This study was designed to estimate the accuracy of the postural assessment software (PAS/SAPO) for measurement of corporal angles and distances as well as the inter- and intra-rater reliabilities. INTRODUCTION Postural assessment software was developed as a subsidiary tool for postural assessment. It is easy to use and available in the public domain. Nonetheless, validation studies...
Non-processed kaolin (flint kaolin) from a mine located in the Capim area (Amazon region, northern Brazil), usually considered as waste, was selected source of silicon and aluminum synthesis SAPO-34. This is molecular sieve cationic exchanger chosen for tests focusing on removal methylene blue aqueous solutions, which dye widely used by textile industries Brazil. The results revealed that SAPO-...
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