Comparative Study of Zeolite L Etching with Ammonium Fluoride and Ammonium Bifluoride Solutions
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چکیده
منابع مشابه
Surface Roughness of Z-Cut Quartz Etched by Ammonium Bifluoride and Ammonium Bifluoride Mixed with Isopropyl Alcohol Solutions
It is meaningful to study the surface morphology of monocrystalline material, but there are few studies on the surface roughness of quartz. So, surface roughness of Z-cut quartz etched by pure ammonium bifluoride and ammonium bifluoride mixed with isopropyl alcohol (IPA) solution was investigated for the first time in this paper. Firstly, when etching in pure ammonium bifluoride solutions, the ...
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With synthetic wastewater, lab-scale batch experiments and column experiments were carried out to investigate the adsorption characteristics of ammonium ion by zeolite 13X which is a hydrothermally synthetic byproduct accompanied with preparation of potassium carbonate from insoluble potash ores. The Langmuir and Freundlich models were applied to describe the equilibrium isotherms for ammonium ...
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هدف از این تحقیق بررسی برخی عوامل ادراکی واحساسی یعنی استفاده از شیوه های یادگیری زبان ، انگیزه ها ونگرش نسبت به زبان انگلیسی در رابطه با زمینه زبانی زبان آموزان می باشد. هدف بررسی این نکته بود که آیا اختلافی چشمگیر میان زبان آموزان دو زبانه و تک زبانه در میزان استفاده از شیوه های یادگیری زبان ، انگیزه ها نگرش و سطح مهارت زبانی وجود دارد. همچنین سعی شد تا بهترین و موثرترین عوامل پیش بینی کننده ...
15 صفحه اولEtching of Silicon in Fluoride Solutions
14 The development and status of what is commonly called the Gerischer mechanism of silicon etching in 15 fluoride solutions is reviewed. The two most widely used and studied wet etchants of silicon are F 16 and OH . Their mechanisms of atom removal share many things in common; in particular, chemical pas17 sivation by a hydrogen-terminated surface plays an important role in both. Crucially, ho...
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ژورنال
عنوان ژورنال: Advanced Materials Interfaces
سال: 2020
ISSN: 2196-7350,2196-7350
DOI: 10.1002/admi.202000348