43.Xu L, Rungta M, Koros WJ. Matrimid®derived carbon molecular sieve hollow fiber membranes for ethylene/ethane separation. Journal of Membrane Science. 2011;380:138 44.Khan AL, Cano-Odena A, Gutie’ rrez B, Minguillo’ n C, Vankelecom IFJ. Hydrogen separation and purification using po...
A series of Pt-Ni/L-zeolite bimetallic catalysts prepared by co-impregnation were tested for n-hexane aromatization and characterized by Extended X-ray Absorption Fine Structure (EXAFS), hydrogen chemisorption and Transmission Electron Microscopy (TEM) before and after sulfiding. It was found that ...
This material, which is generally gray and black in color, has an alkaline structure and has refractory properties, has a high specific surface area (0.2–10 m2/g), particle size between 1 and 100 μm, and a porosity of 30–65%. Its chemical composition is Si, Al, Ca, N, P, K, ...
H Kato,K Ishioh,N Wada,T Ito,T Watanabe 摘要: The behavior of 3 He and 4 He in a one-dimensional channel (≈10 in diameter) of K-L zeolite has been studied by measuring isosteric heat of sorption and heat capacities in the temperature range 0.1–1.5 K as a function of the amount...
Na型沸石对气体的吸附容量很大,甚至比合成的0.5nm分子筛的吸附量还大。 (6)NH4型沸石 将天然沸石用2M的NH4Cl溶液处理,然后用2M的KCl溶液作洗涤剂,其阳离子交换容量可达145mN/100g。 此外还有将比表面积小、孔径小的斜发沸石改型为八面沸石,可应用于化工、炼油领域。改型工艺见图3-3-3。 图3-3-3 八面...
Table 1. Phase selectivity as a function of the benzyl-substituent used as SDA and of crystallization conditions; ‘A’ refers to amorphous material,‘U’ to an unknown material, and ‘(l)’ to low crystallinity. Highlighted in bold and underlined are the most crystalline -ITV samples that ...
a X-shaped b T-shaped ahex l c m/n: branched mn Formation of periodic structures combining channels of different shapes was previously observed for related polyphilic X-shaped molecules (Fig. 1a) with two different and strongly incompatible side chains, such as perfluoroalkyls and carbosi- ...
Ya Margolis, N.F. Ermolenko, S.A. Levina and L.N. Malashevich, Kinet. i. Katal., 12, 242 (1971). Google Scholar E. Cohen de Lara, Mol. Phys., 23, 555 (1972). Article Google Scholar P. Gallezot, G. Coudurier, M. Primet and B. Imelik, ACS Symp. Ser., 40, 144 ...
[2].The temperature range for crystallization has tended to increase withincreasing Si/Al ratio in the zeolite, from 25 to 125°C for the alumi—num—rich zeolites, to 100 to 150°C for the intermediate Si/Al zeo—lites, L, omega, and mordenite, and to near 125 to 200°C for the ...
And the hydroupgrading performance of FCC gasoline over the W-L composite zeolite containing catalyst was evaluated by analyzing HDS efficiency, component distribution and RON preservation. 展开 会议名称: Energy & fuels preprints: papers presented at the 244th National Meeting & Exhibition in ...