用~1H MAS NMR研究粘土中水 来自 知网 喜欢 0 阅读量: 19 作者:陈星绥,沈绥 展开 摘要: 粘土矿物是地壳中含量最丰富的一种矿物,是一类重要的矿产资源,它广泛用于陶瓷,纺织,精细化工,石油化工,石油勘探和开发等领域.粘土中存在的水对粘土矿物的化学物理性质有很大影响,与粘土地质形成过程 展开 ...
采用1H MAS NMR技术,分别对不同温度(773和973 K),不同气氛(氢气,氧气,氦气及空气)条件下处理的SiO2和Rh/SiO2催化剂上的氢物种和含氢物种进行了研究.在SiO2及经氧气处... 晁自胜,吴廷华,叶剑良,... - 《中国科学 化学:中国科学》 被引量: 0发表: 2001年 Methane dehydroaromatization over Mo/HZSM-5 ca...
An analysis of the influence of absorbed carbon monoxide upon the low-temperature 1 H MAS NMR signals of surface hydroxyl groups in zeolites allows the determination of the geometry of the formed adsorption complexes. Information concerning the strength of acidity and the accessibility of the differen...
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MAS NMR sample preparation Tissue samples were kept on ice at all times during the preparation process to minimize metabolite degradation. Where tissue volume permitted, 2 replicates were prepared for High Resolution – Magic Angle Spinning (HR-MAS) Nuclear Magnetic Resonance (NMR) analysis from each...
aThe Si MAS spectrum shows three broad peaks similar to those observed in the 29Si{1H} CP MAS NMR spectrum. 29Si MAS光谱在29Si {1H} CP MAS核磁共振光显示三个宽广的峰顶相似于被观察的那些。 [translate] 英语翻译 日语翻译 韩语翻译 德语翻译 法语翻译 俄语翻译 阿拉伯语翻译 西班牙语翻译 葡萄牙...
aThe Si MAS spectrum shows three broad peaks similar to those observed in the Si{1H} CP MAS NMR spectrum. 如果MAS相似的光谱显示三个宽广的峰顶对被观察的那些在,如果{1H} CP MAS核磁共振光。[translate]
The 1H MAS NMR spectra can clearly distinguish between hydrogen in BH4− anions (−0.6 ppm), H3O2− anions (1.2 ppm) and H2O molecules (5.0 ppm). The structural properties of BH4− intercalation into sodalite framework matrix help connect the microporous materials to hydride-containing A...
Broad-line1H NMR study of desilicated zeolite ZSM-5 was carried out as a function of the number of adsorbed water molecules in amounts lower than or equal