Zobrazeno 1 - 10
of 37
pro vyhledávání: '"L.B. Sand"'
Publikováno v:
Zeolites. 6:396-402
ZSM-5/ZSM-11 intergrowth structures were synthesized from starting reaction mixtures with the mole oxide ratio: 4.5(TBA)2O-14.7M2O-Al2O3-173.4SiO2-2452H2O-9Br where M = Na and/or K. X-ray powder diffraction and selected area electron diffraction were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b439abecf1401a9d6839439e5e2b1bc5
https://doi.org/10.1016/0144-2449(86)90069-2
https://doi.org/10.1016/0144-2449(86)90069-2
Autor:
R. Mostowicz, L.B. Sand
Publikováno v:
Zeolites. 2:143-146
Crystallization phenomena were studied in the synthesis of ZSM-5 using relatively high (Me 2/ n ) 2 O/(TPA) 2 O ratios (12/4.5) in the starting batch composition, as this compositional reactant region has not been investigated previously. A typical s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::730dc8e5910c97d4e853151fb40838ed
https://doi.org/10.1016/s0144-2449(82)80016-x
https://doi.org/10.1016/s0144-2449(82)80016-x
Publikováno v:
Zeolites. 3:57-62
The synthesis of zeolite TPA-ZSM-5 with (NH 4 ) 2 O/Al 2 O 3 = 38 and different amounts of Li 2 O, Na 2 O or K 2 O was studied. Kinetic crystallization data and the growth of the crystals as a function of time are reported. The results show an increm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5206a2dbfa7bbe4aa72f35fcf30d7ff0
https://doi.org/10.1016/0144-2449(83)90086-6
https://doi.org/10.1016/0144-2449(83)90086-6
Autor:
Ayse Erdem, L.B. Sand
Publikováno v:
Journal of Catalysis. 60:241-256
Zeolite ZSM-5 was synthesized as the only crystalline phase from Na-TPA, and for the first time from the K-TPA, and Na,K-TPA mixed cation systems. As the organic cation/ alkali metal cation ratio was decreased in the reaction mixture, metastable phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b8961a6b17ddf82da0ec0a0765e10fc
https://doi.org/10.1016/0021-9517(79)90146-5
https://doi.org/10.1016/0021-9517(79)90146-5
Autor:
L.B. Sand, Majid Ghamami
Publikováno v:
Zeolites. 3:155-162
The crystallization and crystal growth of zeolite TPA-ZSM-5 when ammonium cation is used instead of alkali metal cations are reported. ZSM-5 was the only crystalline product obtained in this system. Activation energies for nucleation and crystallizat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73d3510d76c834fcbc6df69dae22f0b3
https://doi.org/10.1016/0144-2449(83)90205-1
https://doi.org/10.1016/0144-2449(83)90205-1
Autor:
L.B. Sand, Cheng-Hang Chi
Publikováno v:
Zeolites. 5:309-312
This paper reports the synthesis of the large-port K-mordenite endmember using 1 wt% of H-mordenite as seed crystals. By varying the K (Na+K) ratio in the starting batch, a series of K-, (Na,K)-, and Na-mordenites was synthesized. In the mixed cation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4a73e9d182e11d0871c9f8586b880e9
https://doi.org/10.1016/0144-2449(85)90163-0
https://doi.org/10.1016/0144-2449(85)90163-0
Publikováno v:
Zeolites. 7:387-392
The possibility of synthesizing molecular sieve zeolites in space permits one to take advantage of a micro-gravity environment. Particle settling and thermal convective currents can be avoided in space. Data from ground-based experiments are presente
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::710b314ee8c60b8104ef040d096ac3f4
https://doi.org/10.1016/0144-2449(87)90001-7
https://doi.org/10.1016/0144-2449(87)90001-7
Autor:
Bankim Dhanak, L.B. Sand
Publikováno v:
Journal of Catalysis. 48:129-136
This paper reports ou crystallization phenomena observed in a new technique of direct synthesis of particulates in the fluid cracking catalyst size range of faujasite-type zeolite molecular sieve. The procedure, using sized sodium illuminate particle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df1f78f55ee2d08b89588c4540729541
https://doi.org/10.1016/0021-9517(77)90084-7
https://doi.org/10.1016/0021-9517(77)90084-7
Publikováno v:
Zeolites. 5:153-157
The objectives of this study were to systematically study the factors influencing metastability and crystallite morphology in the hydrothermal synthesis of EU—1 and EU—2 in the sodium, ammonium and hexamethonium (Na, NH 4 , HM) cation systems. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb8281f0da7be22e3891084652235118
https://doi.org/10.1016/0144-2449(85)90023-5
https://doi.org/10.1016/0144-2449(85)90023-5
Autor:
L.B. Sand, R. Mostowicz
Publikováno v:
Zeolites. 3:219-225
Starting with batch composition 12Na2O4.5(TPA)2OAl2O39OSiO22000H2O, previously producing spherulitic aggregates ∼ 1 μm, a study was made to determine the effects of various additives and other modifications of the starting composition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52e810ea82adb52dde70ffafd626f29d
https://doi.org/10.1016/0144-2449(83)90011-8
https://doi.org/10.1016/0144-2449(83)90011-8