在1023 K以上的二氧化硅负载的磷化镍催化剂(Ni x P y / SiO 2)上研究了甲烷(DCM)直接脱氢转化为高级烃的过程。通过沉淀法制备Ni x P y / SiO 2催化剂以促进形成磷化镍(Ni 2 P)作为DCM反应的活性相。通过X射线衍射分析H 2进行了不同P / Ni摩尔比的Ni x P y / SiO 2催化剂的表征研究。-程序升温还原光谱,扫描电子显微镜图像,X射线吸收光谱和N 2-吸收测量。使用常规固定床反应器进行DCM反应的催化活性测试。C 2 H 4(乙烯),C 2 H 6(乙烷),C 2 H 2(乙炔),C 3 H 6(丙烯),C 6 H 6(苯),C 7 H 8(甲苯)的产物, C 10 H 8(萘)和H 2通过GC-TCD和GC-FID仪器进行了分析。通过表征研究观察到Ni x P y / SiO 2催化剂具有不同程度的Ni 2 P相和特征。表征研究的数据
IONIC COMPOUND, ELECTROLYTE SOLUTION, SECONDARY BATTERY AND ELECTRICAL APPARATUS
摘要:
The present application relates to an ionic compound, an electrolyte solution, a secondary battery and an electrical apparatus, wherein the ionic compound is represented by formula (1); wherein each R
1
is independently selected from alkyl having 1-10 carbon atoms substituted with fluorine or aryl having 6-30 carbon atoms substituted with fluorine, respectively; wherein any two adjacent —OR
1
groups and A
−
can form a ring through the carbon atom in each R
1
as a site of attachment; A
−
represents B
−
or Si
−
, and Y
+
represents a sodium ion or a potassium ion. The ionic compound can improve the cycling performance of secondary batteries such as sodium-ion batteries and potassium-ion batteries.
Oxide films: low-temperature deposition and crystallization
作者:Sangmoon Park、Gregory S. Herman、Douglas A. Keszler
DOI:10.1016/s0022-4596(03)00169-5
日期:2003.10
Thin films of CeO2 and (Ce,Sm)O2 have been prepared by using the SILAR method of deposition in conjunction with hydrothermal and high-temperature annealing. Low-temperature, low-pressure hydrothermal annealing of amorphous Mn:Zn2GeO4 films has lead to the growth of grains having edge lengths near 1 μm. Thick films of crystalline Zn2SiO4 exhibiting limited cracking have been prepared by a doctor-blade
Laccase was encapsulated during aluminium silicate nanotube (ASNT) hydrogel formation. This encapsulation method has fewer negative effects on the relatively unstable enzyme because of the milder conditions used compared to sol–gel silica formation.
of magnesium inosilicate (MgSiO3) during the alkalifusion process using NaOH was investigated by Raman spectroscopy in situ and X-ray diffraction analyses. The results show that the tetrahedral silica chains within MgSiO3 are gradually disrupted, and nesosilicate with the isolated SiO4 tetrahedra becomes reorganized at the beginning of the alkalifusion process. In the decomposition of MgSiO3, the
Polycrystalline spheres of up to 2 mm diameter of microporous titanosilicate K2TiSi3O9·H2O with umbite structure (Ti-umbite) were prepared without the use of organic structuring agents. The spheres, while preserving the inherent microporosity of the umbite type-material, are organized as hierarchical materials with macropores in the 0.1–1.4-μm size range. Ti-umbite spheres were only produced by hydrothermal
self-organization mechanism of rod-like colloidal nanotubes in accordance with thermodynamic reactionkinetics. Furthermore, this study also explains the nano-architectonics of non-Newtonian fluids, enabling the design of supramolecular assemblies with non-Newtonian properties such as thixotropy. Our results describe for the first time the relationship between the microscopic molecular reactionkinetics and the