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The Chemistry of Cosmetic and Therapeutic Clays from Isinuka Springs in Port St Johns, South Africa
The Chemistry of Cosmetic and Therapeutic Clays from Isinuka Springs in Port St Johns, South Africa
2012/3/14
The Chemistry of Cosmetic and Therapeutic Clays from Isinuka Springs in Port St Johns, South Africa.
SO_4~(2-)／M_XO_Y超强酸作为一类新型的催化剂，具有酸强度高、催化活性高、易分离、无腐蚀及对环境友好等优势，因而广泛用于酯化、烷基异构化、聚合及酰化等有机反应。但由于SO_4~(2-)／M_XO_Y超强酸存在比表面小、酸量少、成本较高及使用寿命较短等不足之处，因而在一定程度上制约了其推广应用。本论文利用储量丰富、价格低廉的广西宁明膨润土为原料，经提纯钠化后，采用微波辐射法制备出具有高比...
Hydroxyl-Stretching Bands in Curve-Fitted Micro-Raman, Photoacoustic and Transmission Infrared Spectra of Dickite from St. Claire, Pennsylvania
Curve-fitting Dickite Infrared LO and TO Crystal Modes Micro-Raman OH bands SEM
2011/12/5
Abstract: The OH-stretching region in curve-fitted micro-Raman, photoacoustic and transmission IR spectra of St. Claire dickite was investigated. Polarized Raman spectra recorded from the (001) and (0...
Clay Minerals in the 1980 Deposits from Mount St. Helens
Chlorite/smectite Mt. St. Helens Saponite Smectite Tephra Volcanic ash
2012/2/7
Phyllosilicates are major components of the <2-µm fraction (1–3 wt. % of most bulk specimens) in more than 50 samples of air-fall tephra from several 1980 eruptions of Mount St. Helens. In all s...