Zobrazeno 1 - 10
of 572
pro vyhledávání: '"J.W. Geus"'
Publikováno v:
Microporous and Mesoporous Materials, 267, 257-264. Elsevier
The textural properties of amorphous silica play a fundamental role in its final properties and, therefore, in its possible applications. The aim of this study is to gain comprehensive understanding about how the process conditions influence the pore
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab93d92a911a40eb9d686d67f9c7fadd
https://research.tue.nl/nl/publications/ca3388c2-5f11-4090-8f3c-02c37d466fbd
https://research.tue.nl/nl/publications/ca3388c2-5f11-4090-8f3c-02c37d466fbd
Publikováno v:
Applied Geochemistry, 52(1), 1-15. Elsevier
This article addresses the kinetics of the dissolution of olivine for nano-silica production at extreme conditions. The extreme conditions are pH values between −0.7 and 1, temperature between 50 and 90 °C, solid content around 250 g/L and percent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b416147a72a34943495e58aa3f589782
https://doi.org/10.1016/j.apgeochem.2014.10.015
https://doi.org/10.1016/j.apgeochem.2014.10.015
Publikováno v:
Microporous and Mesoporous Materials. Elsevier
The production of porous amorphous nano-silica by the olivine route is an interesting alternative to the existing commercial production methods because of the much lower energy requirements of this process. The produced olivine nano-silica has a spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::842bd05da41f5dd7b9a13b6dc3c6cc7d
https://doi.org/10.1016/j.micromeso.2013.08.006
https://doi.org/10.1016/j.micromeso.2013.08.006
Publikováno v:
World Journal of Nano Science and Engineering, 2013(3), 41-51
Nano-silica, one of the substances boosting the field of nanomaterials, can be produced by dissolving olivine in acid. The dissolution of olivine is a convenient alternative route to the existing methods of nano-silica production (neutralization of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb2ecd86f41da5feacf54510e2d1cc5b
https://doi.org/10.4236/wjnse.2013.33006
https://doi.org/10.4236/wjnse.2013.33006
Publikováno v:
Chemical Engineering Journal, 112-121. Elsevier
ISSUE=211-212;STARTPAGE=112;ENDPAGE=121;ISSN=1385-8947;TITLE=Chemical Engineering Journal
ISSUE=211-212;STARTPAGE=112;ENDPAGE=121;ISSN=1385-8947;TITLE=Chemical Engineering Journal
This study addresses the synthesis of amorphous mesoporous nano-silica by the dissolution of olivine in sulfuric acid, showing the influence of the process conditions on the properties of nano-silica. The olivine dissolution process is a convenient a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbe235e92e3d62f5acad6402b0d89ab6
https://doi.org/10.1016/j.cej.2012.09.042
https://doi.org/10.1016/j.cej.2012.09.042
Autor:
P.E. de Jongh, K.P. de Jong, Johannes D. Meeldijk, P.B. Radstake, J.W. Geus, B.S. Dauvillier, Tamara M. Eggenhuisen, Rudy W. P. Wagemans
Publikováno v:
Chemistry of Materials. 19:6052-6057
Magnesium dihydride contains 7.7 wt % hydrogen. However, its application for hydrogen storage is impeded by its high stability and slow kinetics. Bringing the size of Mg(H2) into the nanometer range will not only enhance the reaction rates but has al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3d76f8f9daad6e67071240ab8766ac0
https://doi.org/10.1021/cm702205v
https://doi.org/10.1021/cm702205v
Autor:
J.W. Geus, P.J. van Berge, J. van de Loosdrecht, Armando Borgna, J.W. Niemantsverdriet, A.M. Saib
Publikováno v:
Journal of Catalysis, 239(2), 326-339. Academic Press Inc.
The oxidation of nanosized metallic cobalt to cobalt oxide during Fischer–Tropsch synthesis has long been postulated as a major deactivation mechanism apparently related to cobalt crystallite size. To establish a connection between cobalt crystalli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb66533778d2a9d300bac9c0f557287a
https://doi.org/10.1016/j.jcat.2006.02.004
https://doi.org/10.1016/j.jcat.2006.02.004
Publikováno v:
Carbon. 44:629-637
Carbon nanofibers (CNF) are non-microporous graphitic materials with a high surface area (100–200 m2/g), high purity and tunable surface chemistry. Therefore the material has a high potential for use as catalyst support. However, in some instances
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::979d69c0b1a6f077b3f6dbb5daaf6931
https://doi.org/10.1016/j.carbon.2005.09.031
https://doi.org/10.1016/j.carbon.2005.09.031
Publikováno v:
American Mineralogist. 90:931-944
A new procedure has been developed for a fast preparation of saponite clays under the non-hydrothermal synthesis conditions of 90 degrees Celsius and 1 atmosphere. Saponites were synthesised from a stoichiometric mixture containing Si/Al3+ gel, M2+-n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff87caef954d9a67c24b200be8cdcfb2
https://doi.org/10.2138/am.2005.1616
https://doi.org/10.2138/am.2005.1616
Publikováno v:
Journal of Colloid and Interface Science. 285:86-93
Homogeneous hydrolysis of aluminum by decomposition of urea in solution was achieved because the urea coordinates to the Al3+ in solution, forming [Al(H2O)5 (urea)]3+ and to a lesser extent [Al(H2O)4 (urea)2]3+. Upon hydrolysis more hydrolyzed monome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9aa08461830349ecee3ed98f4671389b
https://doi.org/10.1016/j.jcis.2004.11.045
https://doi.org/10.1016/j.jcis.2004.11.045