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Synthesis and characterization of A1 doped δ-laminar crystal sodium silicate
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作者 Xue Jing Yang Ya Ling Yang +2 位作者 Wei Zhen Mou Sheng Liu Jun Hong Chai 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第4期462-464,共3页
An modified laminar crystal sodium silicate (A1-SKS-6) was synthesized by spray drying and high temperature crystallization using sodium silicate as silicon source, A1 atom as inorganic source and hexadecyltrimethy ... An modified laminar crystal sodium silicate (A1-SKS-6) was synthesized by spray drying and high temperature crystallization using sodium silicate as silicon source, A1 atom as inorganic source and hexadecyltrimethy ammonium bromide (CTMAB) as the structure template. The hydrothermal stability of product was at least 1 h. The synthesized material was characterized by XRD and SEM. The results indicated that shape and intensity of XRD diffraction peak at 20 took changes, but raw material 8 phase crystal form kept unchanged, and assured high Ca^2+ and Mg^2+ binding capacity of the products. The Ca^2+ and Mg^2+ binding capacity of product is up to 380 mg Ca/g and 410mg Mg/g respectively. It was found that the hole of product became smaller and appeared rod structure based on SEM. The hydrothermal stability was increased due to the pillaring of AI atom. 展开更多
关键词 a1 doping δ-Laminar crystal sodium silicate Detergent builder STABILITY
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Geometrical Structures and Electronic Properties of Copper-Doped Aluminum Clusters 被引量:2
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作者 Xi-hui Cheng Da-jun Ding +1 位作者 Yong-gang Yu Ming-xing Jin 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2012年第2期169-176,I0003,共9页
Using density function theory (DFT), the Cu-doped Aln (n=1-15) clusters have been stud- ied. The electron affinity, ionization potential, Mulliken population analysis of Cu, mean polarizability, polarizability ani... Using density function theory (DFT), the Cu-doped Aln (n=1-15) clusters have been stud- ied. The electron affinity, ionization potential, Mulliken population analysis of Cu, mean polarizability, polarizability anisotropy, dipole moments and HOMO-LUMO gaps have also been calculated on the basis of optimized geometries. The results indicate that there is magic numbers in copper-doped aluminum clusters and electronic characteristic depended on the size of clusters. As n=13, the electron affinity and ionization potential of cluster changed more than 0.3 and 0.6 eV respectively, compared with neighborhood clusters. 展开更多
关键词 Density function theory electronic properties Cu doped a1 clusters
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