نتایج جستجو برای: kaolin hydrothermal method

تعداد نتایج: 1645712  

A. Foroutan, A. K. Darban, B. Rahnama, E. Taheri-Nassaj, Y. Kianinia,

A method for producing high surface area nano-sized mesoporous alumina from inexpensive Iranian kaolin as raw material is proposed. In this method, first, kaolin was purified for purifying Kaolin, High Grade Magnetic Separation and leaching with HCl and chemical bleaching treatment by using sodium dithionite (Na 2 S 2O4 ) as reducing agent in acidic media (H 2SO 4 ) were used. Pur...

Journal: :Journal of Cleaner Production 2023

The current production of zeolites from natural sources requires high temperatures to achieve a phase change in the feedstock materials. Thermal processes such as calcination are energy-consuming and industry relies on fossil fuels generate necessary heat, which is neither sustainable nor environmental. This study presents for first time treatment aluminosilicate clay kaolin solar reactor produ...

2003

When Folin and Denis’ described their method for the estimation of non-protein nitrogen in blood, it became possible to make such determinations quickly, accurately, and with the use of only small amounts of blood. The method rapidly came into general use and has proved to be of great service. It has, however, not escaped modification in the interest of increased accuracy and convenience. The p...

Journal: :The Biochemical journal 2003
E Ponder

When Folin and Denis’ described their method for the estimation of non-protein nitrogen in blood, it became possible to make such determinations quickly, accurately, and with the use of only small amounts of blood. The method rapidly came into general use and has proved to be of great service. It has, however, not escaped modification in the interest of increased accuracy and convenience. The p...

فتاحی, شیرین, مری, خدیجه, منصوری اصفهانی, مهین, مکی‌زاده, محمدعلی,

The Rahmatabad Kaolin deposit is located about 25 km southwest of Nain. This deposit is formed by alteration process from Eocene volcanic rocks and pyroclastic units. Mineralogical studies display that the kaolinite, jarosite, hematite, quartz, calcite, anortite, alunite, diaspore, chlorite, montmorillonite, illite, albite, orthoclase, halite, sanidine, goethite, malachite, azurite and sericite...

2014
Wilson Aguilar-Mamani Gustavo García Jonas Hedlund Johanne Mouzon

Inexpensive raw materials have been used to prepare ZSM-5 zeolites with SiO2/Al2O3 molar ratios in the range 20 - 40. Kaolin or Bolivian diatomaceous earth was used as aluminosilicate raw materials and sodium hydroxide and n-butylamine were used as mineralizing agents and template. Dealumination of the raw materials by acid leaching made it possible to reach appropriate SiO2/Al2O3 ratios and to...

Journal: :Processes 2021

Experiments were conducted simulating hydrothermal conversion of heavy oil in the presence carbonate, kaolin, Al2O3, Ni2+ and Cu2+, NiO mixed with poly-?-olefins, C6H8O7, C2H4O2 at 290–375 °C 10–135 bar. carbonate 375 135 bar, accelerated resin degradation. 350 10 bar showed no significant composition changes. NiSO4, CuSO4, kaolin mineral, 78 decomposition resins (from 35.6% to 32.5%). Al2O3 29...

Journal: :international journal of nanoscience and nanotechnology 2012
m. ranjbar m. yousefi m. lahooti a. malekzadeh

in this study, isophthalic acid-zirconium(iv) nanocomposite has been prepared from zirconyl nitrate pentahydrate and potassium iodide, with isophthalic acid, (c8h6o4=benzene-1,3-dicarboxylic acid) as a ligand, via sonochemical method in ethylene glycol and methanol as solvents. the crystalline tetragonal zro2 has been produced by thermal decomposition of isophthalic acid-zirconium(iv) nanocompo...

1999
Pri Utami

The presently vapor-dominated Kamojang geothermal field is located in West Java (Indonesia). The field lies in high terrain, 1500 m above sea level, and is hosted by volcanic rocks. Samples from seven wells were kindly made available for this study, namely from KMJ-7, KMJ-10, KMJ-11, KMJ12, KMJ-53, KMJ-59, and CHR-1 drilled to depths ranging from 536 – 1804 m. The reservoir is hosted by interbe...

Journal: :Applied microbiology 1970
T P Monath H S Lindsey J G Nuckolls W A Chappell B E Henderson

Human sera were treated with kaolin, acetone, and dextran sulfate to determine the best method for removing nonspecific hemagglutination inhibitors. Results indicated that on surveys for group A, group B, and some group C arbovirus HI antibodies, dextran sulfate treatment of sera could be used effectively. This method, however, has limited usefulness for detecting HI antibody for a number of ar...

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