Results 41 to 50 of about 211,193 (207)
Pd/SAPO-34 passive NO x adsorbers: Stable Pd ion adsorption sites in six-member rings
Materials Research Express, 2021 Pd/zeolites with chabazite (CHA) topology are effective passive NO _x adsorbers (PNAs), which are promising for the removal of NO _x from diesel exhausts during cold start to meet increasingly stringent emission regulations.
Nana Zhang +7 more
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Scientific ReportsWe present a novel, one-step hydrothermal synthesis of carbon dots (CDs) with intense blue fluorescence and a remarkably high quantum yield of 50%, using ethylene glycol tetraacetic acid (EGTA) as a single precursor eliminating the need for additional ...
Kanwal Iqbal +6 more
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SeparationsThis study focuses on optimizing two tandem columns to separate ethylbenzene and styrene. A steady-state model is developed to minimize total energy consumption (TEC) and total annualized cost (TAC) by optimizing the reflux flow rates.
Guangsheng Jiang +4 more
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Nanoscale Research Letters, 2018 A novel soft-template (ST) is fabricated and successfully employed as mesoporogen to synthesis hierarchical ZSM-5 zeolites with outstanding mesoporosity and high hierarchy factors.
Guoqiang Song +8 more
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Modelling of epitaxial graphene functionalization
, 2010 A new model for graphene, epitaxially grown on silicon carbide is proposed. Density functional theory modelling of epitaxial graphene functionalization by hydrogen, fluorine and phenyl groups has been performed with hydrogen and fluorine showing a high ...
Berashevich J +6 more
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Plausibility of potassium ion-exchanged ZSM-5 as soot combustion catalysts
Scientific Reports, 2017 Potassium (K) ion-exchanged ZSM-5 zeolites were investigated for catalytic soot combustion. X-ray absorption fine-structure (XAFS), Raman, in situ IR and NH3-temperature programmed desorption (NH3-TPD) confirmed the location of K+ at the ion-exchanged ...
Chenxi Lu +6 more
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Fluorine in the solar neighborhood - is it all produced in AGB-stars?
, 2014 The origin of 'cosmic' fluorine is uncertain, but there are three proposed production sites/mechanisms: AGB stars, $\nu$ nucleosynthesis in Type II supernovae, and/or the winds of Wolf-Rayet stars.
Harper, G. M. +4 more
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Fluorination with Complex Fluorine Compounds
The Journal of the Society of Chemical Industry, Japan, 1969 鉄,アルミニウム,アンチモン,ケイ素,チタンなどの6配位錯フッ化物によるハロゲン交換フッ素化反応について研究した。フッ素化の対象としては,四塩化炭素,クロロホルム,ヘキサクロルエタンなどの有機塩素化合物をえらび,オートクレープ中で250ないし350℃で2時間ないし4時間反応させた。この結果,鉄,アンチモン,アルミニウムなどの錯フッ化勃の活性が大きく,ケイ素の錯フッ化物の活性はこれらについだ。これに対し,チタソの錯フッ化物は不活性であることがわかった。鉄,アンチモン,アルミニウムの錯フッ化物の活性が大きいことは,これら錯フッ化物がリガンド交換活性な外軌道または高スピン錯塩であることによるものと考えられる。実際に,反応後の固体をX線回折分析により調べたところ,低配位錯塩NaAIF4 ...
Susumu OKAZAKI, Tadayoshi WATANABE
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Molecules, 2017 In this work, a thermo-responsive and cross-linked fluoropolymer poly(2,2,2-Trifluoroethyl) methacrylate (PTFEMA) was successfully prepared by reversible addition-fragmentation chain transfer (RAFT) mediated aqueous polymerization with a thermo ...
Jiachen Ma +5 more
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Chemical diffusion of fluorine in jadeite melt at high pressure [PDF]
, 1984 The chemical diffusion of fluorine in jadeite melt has been investigated from 10 to 15 kbars and 1200 to 1400°C using diffusion couples of Jadeite melt and fluorine-bearing jadeite melt (6.3 wt.% F). The diffusion profile data indicate that the diffusion
Dingwell, Donald B. +1 more
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