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A comparative study of perfluorinated and non-fluorinated UiO-67 in gas adsorption
Springer Science and Business Media LLC - Tập 27 Số 6 - Trang 1773-1782 - 2020
Anastasia M. Cheplakova, Konstantin A. Kovalenko, A. S. Vinogradov, В. М. Карпов, V. Е. Platonov, Vladimir P. Fedin
Phase transition of mesoporous SiO2 impregnated with an organic templating agent by post-synthetic microwave heating
Springer Science and Business Media LLC - Tập 15 - Trang 93-99 - 2006
Soo-Hyun Jang, Wha-Seung Ahn
Mesoporous silica SBA-15 samples were subjected to microwave heating for 10–40 min at 393 and 443 K after dry-impregnation with TPAOH (tetrapropylammonium hydroxide) to prepare a mesoporous material with zeolytically ordered pore walls. Physicochemical properties of the materials prepared were characterized by XRD, N2 adsorption at 77 K, SEM, TEM, UV–vis and FT-IR spectroscopies. These investigati...... hiện toàn bộ
SEM–EDX and XRD characterization of zeolite NaA, synthesized from rice husk and aluminium scrap by different procedures for preparation of the initial hydrogel
Springer Science and Business Media LLC - Tập 20 - Trang 249-255 - 2012
Annie Shoumkova, Valeria Stoyanova
A number of investigations have demonstrated that zeolite NaA could be synthesized using Si, extracted from rice husk ash; however, experiments on direct extraction of Si from rice husk (RH) are scarce. The main objective of the present study was to explore the possibility to synthesize high-quality zeolite NaA from RH and waste aluminium cans (as a source of Al), applying different procedures for...... hiện toàn bộ
Preparation of zeolite-cellulose composites for water disinfection
Springer Science and Business Media LLC - Tập 28 - Trang 1459-1468 - 2021
Chen Chen, Gongguan Wang, Xiaowen Xu
The drinking water shortage is globe concern currently, thus, developing an economical, green, antibacterial composites is urgent. Here, we report a simple and scalable strategy to synthesize zeolite-cellulose composites by the filter paper immersed in the precursor solution of synthetic zeolite. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray f...... hiện toàn bộ
Adsorption of CO2 and CO on H-zeolites with different framework topologies and chemical compositions and a correlation to probing protonic sites using NH3 adsorption
Springer Science and Business Media LLC - Tập 23 - Trang 291-299 - 2015
Moon Hyeon Kim, Il Hum Cho, Joung Ho Park, Sang Ok Choi, In-Su Lee
Adsorption of CO2 and CO at 25 °C has been conducted using commercially-available (Y, ZSM-5) and laboratory-synthesized (SSZ-13, SAPO-34) H-zeolites with different framework topologies and chemical compositions, and their textual and surface properties have been characterized by N2 sorption and NH3 adsorption techniques. All the zeolites were microporous, although ZSM-5 and SSZ-13 apparently showe...... hiện toàn bộ
Novel porous organosilica containing amino and β-cyclodextrin groups
Springer Science and Business Media LLC - Tập 20 - Trang 663-671 - 2012
Stephanie Degoutin, Maryse Bacquet
The elaboration of new hybrid mesoporous silica materials containing β-cyclodextrin groups and amine functions is reported. The synthesis is based on a direct co-condensation between β-CDAPS, a hybrid precursor obtained by reaction between tosyl-β-cyclodextrin and aminopropyltrimethoxysilane previously described, and tetraethyl orthosilicate via a sol–gel pathway templated by three different surfa...... hiện toàn bộ
Raman Scattering from Metal-Deposited Porous Silicon
Springer Science and Business Media LLC - Tập 7 - Trang 397-400 - 2000
Tetsuo Sakka, Takashi Tsuboi, Yukio H. Ogata, Mahito Mabuchi
Raman scattering from porous silicon layer into which silver is immersion-plated was studied. Ag-deposited samples show extra Raman bands. Heat treatment of the Ag-deposited samples results in a great decrease in such Raman bands. Also dipping in hydrofluoric acid solution causes a spectral change. Some comments on the assignment of the Raman peaks of the Ag-deposited porous silicon are given, and...... hiện toàn bộ
Synthesis of iron substituted zeolite with Na-P1 framework
Springer Science and Business Media LLC - Tập 24 - Trang 1061-1068 - 2016
Asami Kumon, Zaenal Abidin, Naoto Matsue
Zeolites with substitution by transition metals are expected to have unique catalytic properties in addition to common cation exchange abilities, but studies on the synthesis of iron-substituted zeolites with a greater cation exchange capacity (CEC) are very few. We hydrothermally synthesized iron-substituted Na-P1 type zeolites having CEC values of >300 cmolc kg−1 with iron content of up to 90 cm...... hiện toàn bộ
Gamma radiation mediated catalytic process for hydrogen generation by water decomposition on NaNO3 surface
Springer Science and Business Media LLC - - 2024
Gunel Imanova, Sakin Jabarov, Teymur Agayev, Yusif Aliyev, Anar Aliyev, Ilkhom Bekpulatov, Selimkhan Aliyev
The constituent parts of systems where radiation-catalytic processes occur usually differ in terms of mass and electron density, structural characteristics, electro-physical and chemical properties. Therefore, interaction between phases in any form has a sharp effect on the direction and parameters of the processes in individual components. The resulting X-ray diffraction pattern was mainly determ...... hiện toàn bộ
Manganese oxide nanocomposites with improved surface area prepared by one-pot surfactant route for electro catalytic and biosensor applications
Springer Science and Business Media LLC - Tập 17 - Trang 677-683 - 2009
R. Jothiramalingam, M. K. Wang
Braunite phase manganese oxide is naturally available in manganese–silicate rocks with minor amount of silicate content. New synthetic route is attempted to prepare the manganese oxide nanoparticle and silica incorporated manganese oxide nanocomposite in the present study. XRD patterns reveal the braunite phase formation for as synthesized manganese oxide nanocomposite and silica incorporated MnO2...... hiện toàn bộ
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