نتایج جستجو برای: zeolitic water

تعداد نتایج: 551589  

Journal: :Talanta 2004
V S Somerset L F Petrik R A White M J Klink D Key E Iwuoha

The use and application of synthetic zeolites for ion exchange, adsorption and catalysis has shown enormous potential in industry. In this study, X-ray fluorescence (XRF) analysis was used to determine Si and Al in fly ash (FA) precipitates. The Si and Al contents of the fly ash precipitates were used as indices for the alkaline hydrothermal conversion of the fly ash compounds into zeolites. Pr...

Journal: :Biomaterials science 2017
Xiaoli Wang Dandan Miao Xiaoyu Liang Jiayi Liang Chao Zhang Jing Yang Deling Kong Chun Wang Hongfan Sun

A novel bone-targeted delivery systems based on nanocapsules was developed utilizing a Zeolitic Imidazolate Framework (ZIF-8) as a template and catechol-modified gelatin as wall material. A targeting ligand was facilely conjugated on the surface of nanocapsules. Simvastatin was encapsulated within the nanocapsules with a loading of 37.9%. Hydroxyapatite binding and in vivo biodistribution of th...

Journal: :Chemical communications 2011
Tamas Panda Pradip Pachfule Yifei Chen Jianwen Jiang Rahul Banerjee

A three dimensional -NH(2) functionalized Zeolitic Tetrazolate Framework (ZTF-1) has been reported. The framework adopts a dia topology (M-L-M angle is close to 156°). ZTF-1 shows high CO(2) (273 K) and H(2) (77 K) uptake due to the presence of the free -NH(2) group and uncoordinated tetrazolate nitrogen.

Journal: :Dalton transactions 2014
Liu He Lu Li Tingting Wang Hong Gao Guangzhe Li Xiaotong Wu Zhongmin Su Chungang Wang

A facile two-step strategy was developed to fabricate yellow fluorescent glutathione-Au nanoclusters/zeolitic imidazolate framework-8 nanoparticles (GSH-Au NCs/ZIF-8 NPs) and their derived Au/ZnO NPs, which exhibited visible light photocatalytic hydrogen evolution together with degradation of Rhodamine B (RhB).

Journal: :Dalton transactions 2012
Adam F Gross Elena Sherman John J Vajo

Sodalite zeolitic imidazolate frameworks containing Co (ZIF-67) and Zn (ZIF-8) were synthesized at room temperature under aqueous conditions in 10 min. A trialkylamine deprotonated the 2-methylimidazole ligand and nucleated the frameworks. Furthermore, the ligand acted as a structure directing agent in place of an organic solvent.

Journal: :Journal of the American Chemical Society 2003
Do Trong On Serge Kaliaguine

ZSM-5- and NaY-coated MCF materials as new acid catalysts for conversion of bulky molecules were prepared by the coating procedure using diluted clear zeolite gel solutions. The resulting materials have high acidity and improved steam stability as compared to that of the corresponding MCF aluminosilica. This could be due to the zeolitic nature and relative hydrophobicity of the mesopore surface.

Journal: :Chemical communications 2015
Fernando Cacho-Bailo Guillermo Caro Miren Etxeberría-Benavides Oğuz Karvan Carlos Téllez Joaquín Coronas

Zeolitic imidazolate framework-93 (ZIF-93) continuous membranes were synthesized on the inner side of P84 co-polyimide hollow fiber supports by microfluidics. MOFs and polymers showed high compatibility and the membrane exhibited H2-CH4 and CO2-CH4 separation selectivities of 97 (100 °C) and 17 (35 °C), respectively.

Journal: :Chemical communications 2013
Rizhi Chen Jianfeng Yao Qinfen Gu Stef Smeets Christian Baerlocher Haoxue Gu Dunru Zhu William Morris Omar M Yaghi Huanting Wang

A new two-dimensional zeolitic imidazolate framework (named as ZIF-L) was synthesized in zinc salt and 2-methylimidazole (Hmim) aqueous solution at room temperature. ZIF-L (Zn(mim)2·(Hmim)1/2·(H2O)3/2 or C10H16N5O3/2Zn) has unique cushion-shaped cavities and leaf-like crystal morphology, and exhibits excellent CO2 adsorption properties.

Journal: :The Journal of Physical Chemistry 1967

Journal: :Chemical communications 2012
Constantinos Dimitrakakis Benedetta Marmiroli Heinz Amenitsch Luca Malfatti Plinio Innocenzi Gianluca Grenci Lisa Vaccari Anita J Hill Bradley P Ladewig Matthew R Hill Paolo Falcaro

For the first time a top-down process was used to control the spatial location of Metal-Organic Frameworks on a surface. Deep X-ray lithography was utilised to micropattern a Zeolitic Imidazolate Framework layer on a sol-gel surface, with exposure hardening the sol-gel by inducing crosslinking while leaving the frameworks intact.

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