نتایج جستجو برای: mesoporous materials

تعداد نتایج: 444707  

2017
Heba M. Gobara

ILICATE mesoporous materials have received widespread interest .....because of their potential applications. These novel materials, prepared either by softor hard-templating syntheses, become more and more important in many fields of science and technology such as adsorption, catalysis, separations, environmental processes, nanotechnology and biotechnology. According to IUPAC definition inorgan...

2008
Altug S. Poyraz Cemal Albayrak Ömer Dag

Tri-block copolymers (poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene oxide), represented as EOxPOyEOx), pluronics (F127 = EO106PO70EO106, P65 = EO20PO30EO20, P85 = EO27PO39EO27, P103 = EO17PO55EO17, and P123 = EO20PO70EO20) and cationic surfactants (cethyltrimethylammonium bromide (CTAB)), two surfactant systems, form complex micelles that self-assemble into mesostructured particles w...

2016
Shijiao Sun Xiangyu Zhao Meng Yang Linlin Wu Zhaoyin Wen Xiaodong Shen

Highly ordered mesoporous Co3O4 materials have been prepared via a nanocasting route with three-dimensional KIT-6 and two-dimensional SBA-15 ordered mesoporous silicas as templates and Co(NO3)2 · 6H2O as precursor. Through changing the hydrothermal treating temperature of the silica template, ordered mesoporous Co3O4 materials with hierarchical structures have been developed. The larger pores a...

Journal: :Chemical communications 2002
Min Kang Seung Hwan Yi Hyung Ik Lee Jae Eui Yie Ji Man Kim

Highly ordered mesoporous silica can be regenerated from a mesoporous carbon CMK-3 that is a negative replica of mesoporous silica SBA-15, indicating reversible replication between carbon and inorganic materials.

2015
Yan Yan Li Yi Cao Ming Bo Yue Jing Yang Jian Hua Zhu

In order to reduce the harmful constituents in cigarette smoke, two hierarchical composites were synthesized. Based on, zeolites HZSM-5 or NaY fragments were introduced into the synthetic system of mesoporous silica SBA-15 or MCM-41 and assembled with the mesoporous materials. These porous composites combine the advantages of micro- and mesoporous materials, and exhibit higher effects than acti...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
ghodsi mohammadi ziarani somayeh mousavi negar lashgari alireza badiei monireh shakiba

1,8-dioxo-decahydroacridines have been synthesized by the three-component reaction of aromatic aldehydes, aromatic amines (or ammonium acetate), and dimedone in the presence of sulfonic acid functionalized nanoporous silica (sba-pr-so3h) under solvent-free conditions. excellent yields, short reaction times, mild reaction conditions, and easy work-up procedures are advantages of this green method.

Journal: :National Science Review 2021

Journal: :Langmuir : the ACS journal of surfaces and colloids 2013
Shuru Li Xuan Jiao Hengquan Yang

Inspired by the structure features of micelle, we attempt to synthesize a novel functionalized mesoporous silica nanosphere consisting of a hydrophobic core and a hydrophilic shell. The obtained solid materials were structurally confirmed by N(2) sorption, X-ray diffraction (XRD), and transmission electron microscopy (TEM). Their compositions were characterized by Fourier transfer infrared spec...

Journal: :Nature chemistry 2009
Yu Han Daliang Zhang Leng Leng Chng Junliang Sun Lan Zhao Xiaodong Zou Jackie Y Ying

Ordered porous materials with unique pore structures and pore sizes in the mesoporous range (2-50 nm) have many applications in catalysis, separation and drug delivery. Extensive research has resulted in mesoporous materials with one-dimensional, cage-like and bi-continuous pore structures. Three families of bi-continuous mesoporous materials have been made, with two interwoven but unconnected ...

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