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Results overview: Found 7 records in 0.04 seconds.
Articles, 7 records found
Articles 7 records found  
1.
8 p, 648.8 KB Response surface optimization for activation of bentonite using microwave irradiation / Petrović, Srdjan (University of Belgrade. Institute of Chemistry, Technology and Metallurgy. Department of Catalysis and Chemical Engineering.) ; Rožić, Ljiljana (University of Belgrade. Institute of Chemistry, Technology and Metallurgy. Department of Catalysis and Chemical Engineering.) ; Vuković, Zorica (University of Belgrade. Institute of Chemistry, Technology and Metallurgy. Department of Catalysis and Chemical Engineering) ; Novaković, Tatjana (University of Belgrade. Institute of Chemistry, Technology and Metallurgy. Department of Catalysis and Chemical Engineering) ; Stanisavljev, Dragomir (University of Belgrade. Faculty of Physical Chemistry)
Microwave irradiation as a means for heating bentonites during acid activation has been investigated in the past but it has never been optimized for industrial applications. The purpose of this study was to apply a factorial 2 experimental design to a Serbian bentonite in order to determine the influence of microwave heating on the acid-activation process. [...]
2012 - 10.1346/CCMN.2012.0600103
Clays and Clay Minerals, Vol. 60, Núm. 1 (2012) , p. 32-39  
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2.
5 p, 257.7 KB Baseline studies of The Clay Minerals Society source clays : Specific surface area by Brunauer Emmett Teller (BET) method / Dogan, A. Umran (University of Iowa. Department of Chemical and Biochemical Engineering) ; Dogan, Meral (Hacettepe University. Department of Geological Engineering) ; Omal, Muserref (Ankara University. Department of Chemistry) ; Sarikaya, Yuksel (Ankara University. Department of Chemistry) ; Aburub, Aktham (Lilly Research Laboratories) ; Wurster, Dale Eric (University of Iowa. Obermann Center for Advanced Studies)
Specific surface area measurements of The Clay Minerals Society source clays were made by the Brunauer, Emmett and Teller (BET) method of adsorption of nitrogen gas. Two replicate measurements of specific surface area were performed for each source clay. [...]
2006 - 10.1346/CCMN.2006.0540108
Clays and Clay Minerals, Vol. 54, Núm. 1 (2006) , p. 62-66  
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3.
23 p, 1.4 MB The charge of component layers of illite-smectite in bentonites and the nature of end-member illite / Środoń, Jan (Institute of Geological Sciences PAN) ; Zeelmaekers, Edwin (University of Leuven. Laboratory for Applied Geology and Mineralogy) ; Derkowski, Arkadiusz (Institute of Geological Sciences PAN)
The nature of component layers of mixed-layer illite-smectite and their possible evolution in the course of illitization have been debated since the 1960s. The present study is a new attempt to solve these problems, using samples collected from diverse geological formations around the world. [...]
2009 - 10.1346/CCMN.2009.0570511
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 649-671  
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4.
20 p, 288.5 KB Surface area and layer charge of smectite from CEC and EGME/H2O-retention measurements / Środoń, Jan (Institute of Geological Sciences PAN) ; McCarty, Douglas K. (Chevron ETC)
The total specific surface area (TSSA) and smectitic layer charge (Q) calculated from the structural formulae and unit-cell dimensions of 12 pure smectite samples were used as a reference in the design and evaluation of TSSA and Q measurement techniques based on cation exchange capacity (CEC), HO retention at 47% RH, and ethylene glycol monoethyl ether (EGME) retention. [...]
2008 - 10.1346/CCMN.2008.0560203
Clays and Clay Minerals, Vol. 56, Núm. 2 (2008) , p. 155-174  
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5.
8 p, 133.2 KB Baseline studies of the Clay Minerals Society Special Clays : Specific suerface area by the Brunauer Emmett Teller (BET) method / Dogan, Meral (University of Iowa. Department of Civil and Environmental Engineering) ; Umran Dogan, A. (University of Iowa. Department of Chemical and Biochemical Engineering) ; Irem Yesilyurt, F. (Aksaray University. Department of Geological Engineering) ; Alaygut, Dogan (TPAO. Turkish National Petroleum Corporation) ; Buckner, Ira (University of Iowa. College of Pharmacy) ; Wurster, Dale Eric (University of Iowa. College of Pharmacy)
The Clay Minerals Society published a complete characterization scheme for its 'Source Clays' but not for its 'Special Clays'. To address this issue, the specific surface areas (SSAs) of the 16 special clays from The Clay Minerals Society were determined using the Brunauer, Emmett and Teller (BET) method of adsorption of an inert gas. [...]
2007 - 10.1346/CCMN.2007.0550508
Clays and Clay Minerals, Vol. 55, Núm. 5 (2007) , p. 534-541  
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6.
11 p, 1.2 MB Mineralogical, chemical, and physical characterization of synthetic al-substituted maghemites (γ-fe2-xalxo3) / Batista, Marco Alexandre da Silva (Universidade Estadual de Maringá. UEM, Departamento de Agronomia) ; da Costa, Antonio C. S. (Universidade Estadual de Maringá. UEM, Departamento de Agronomia) ; Bigham, Jerry M. (The Ohio State University. School of Environment and Natural Resources) ; de Santana, Henrique (Universidade Estadual de Londrina. UEL, Departamento de Quemica) ; Zaia, Dimas A. M. (Universidade Estadual de Londrina. UEL, Departamento de Quemica) ; de Souza Junior, Ivan G. (Universidade Estadual de Maringá. UEM, Departamento de Agronomia)
Maghemite (γ-FeO) is a ferrimagnetic Fe oxide commonly found in tropical and subtropical soils, especially in the topsoil where it is usually a product of burning. Isomorphic substitution (IS) of the Fe in maghemite by different metals (mainly Al) can modify its mineralogical and chemical attributes, and these modifications may be important to understanding the formation and properties of this mineral in soils and sediments. [...]
2010 - 10.1346/CCMN.2010.0580401
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 451-461  
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7.
15 p, 714.1 KB On the problems of total specific surface area and cation exchange capacity measurements in organic-rich sedimentary rocks / Derkowski, Arkadiusz (Polish Academy of Sciences. Institute of Geological Sciences) ; Bristow, Thomas F. (NASA. Ames Research Center)
The increasing exploration and exploitation of hydrocarbon resources hosted by oil and gas shales demands the correct measurement of certain properties of sedimentary rocks rich in organic matter (OM). [...]
2012 - 10.1346/CCMN.2012.0600402
Clays and Clay Minerals, Vol. 60, Núm. 4 (2012) , p. 348-362  
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