Results 41 to 50 of about 2,628 (192)
Synthesis of Titania-Silica Materials by Sol-Gel
Materials Research, 2002 In this work TiO2-SiO2 glasses containing as much as 20 mol % of TiO2 were prepared via sol-gel process using titanium and silicon alkoxides, in the presence of chlorine, in the form of titanium tetrachloride or HCl. The gels were heat-treated until 800 &
Rubia F. S. Lenza, Wander L. Vasconcelos
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SYNTHESIS OF SPHERICAL SILICA PARTICLES WITH 3-MERCAPTOPROPYL GROUPS IN THEIR SURFACE LAYER [PDF]
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2012 Spherical silica particles were synthesized by modified Stöber method using tetraethoxysilane and 3- mercaptopropyltrimethoxysilane (MPTMS). It was shown that their size (500-760 nm) depends on the nature of the catalyst used in the prehydrolysis of ...
Nazarchuk G. І. +2 more
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BioResources, 2008 This paper presents a preliminary study for the production of dissolving pulp from Trema orientalis (Nalita). Water prehydrolysis kraft and soda-ethylenediamine (EDA) pulping for the production of dissolving pulp from T.
M. A. Quaiyyum +3 more
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Suppressing pre-hydrolysis in TiO2 manufacturing: Design optimization of an indirect heating hydrolysis system [PDF]
Chemical Industry and Chemical Engineering QuarterlyThe particle size of 𝑇𝑖𝑂2 is critically influenced by the operation of the hydrolysis process. Failure to achieve uniform particle size during hydrolysis can have significant repercussions on subsequent processes, such as washing, reduction, and ...
Han Junhee, Kim Hyojung, Lee Dohyung
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PLoS ONE, 2014 Corn stover is a promising feedstock for bioethanol production because of its abundant availability in China. To obtain higher ethanol concentration and higher ethanol yield, liquid hot water (LHW) pretreatment and fed-batch semi-simultaneous ...
Xuezhi Li, Jie Lu, Jian Zhao, Yinbo Qu
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ATPase mechanism of the 5'-3' DNA helicase, RecD2: evidence for a pre-hydrolysis conformation change [PDF]
, 2013 The superfamily 1 helicase, RecD2, is a monomeric, bacterial enzyme with a role in DNA repair, but with 5'-3' activity unlike most enzymes from this superfamily. Rate constants were determined for steps within the ATPase cycle of RecD2 in the presence of
Bae +34 more
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Influence of xylan content on the oxygen delignification performance of eucalypt kraft pulps as studied using prehydrolysis and xylanase treatments [PDF]
BioResources, 2012 Common metrics for evaluating the efficiency of oxygen delignification include the kappa number and Klason lignin content. As a change in xylan content often leads to a change in HexA content, the kappa number must be corrected for the HexA contribution ...
Helena Wedin +3 more
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BioResources, 2014 Despite increasing demand for dissolving pulps from raw material, production costs remain quite high compared to regular paper pulp. Research literature to date has focused on improving performance and quality but has not simultaneously explored how to ...
Guang Li +3 more
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Studi Awal Desain Pabrik Bioetanol dari Corn Stover [PDF]
, 2015 Jagung (Zea mays) merupakan tanaman pangan yang penting di Indonesia. Pada tahun 2006, luas panen jagung adalah 3,5 juta hektar dengan produksi rata-rata 3,47ton/ha, produksi jagung secara nasional 11,7 juta ton.
Lestari, N. F. (Nia) +2 more
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