Preparation and Physisorption Characterization ofd-Glucose-Templated Mesoporous Silica Sol−Gel Materials

1999 ◽  
Vol 11 (8) ◽  
pp. 2023-2029 ◽  
Author(s):  
Yen Wei ◽  
Jigeng Xu ◽  
Hua Dong ◽  
Jian Hua Dong ◽  
Kunyuan Qiu ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Sol Gel ◽  
Silica Sol

Mesoporous Silica Sol-Gel as Catalyst for the Synthesis of Alkylpolyglucosides

2012 ◽  
Vol 620 ◽  
pp. 446-452 ◽  
Author(s):  
Izazi Azzahidah Amin ◽  
Mohd Ambar Yarmo ◽  
Nik Idris Nik Yusoff ◽  
Mohd Zahid Yusoff ◽  
Alifee Ayatillah
Keyword(s):  
Binding Energy ◽  
Mesoporous Silica ◽  
Surface Area ◽  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
Silica Sol ◽  
Area Measurement ◽  
Bet Surface Area ◽  
Solid Catalyst ◽  
Positive Mode

The synthesis of alkylpolyglucosides involves condensation of decanol with dextrose in the presence of mesoporous silica sol-gel as a catalyst. In this study, mesoporous silica was produced using sol-gel technique by converting tetraethyl orthosilicate (TEOS) into silica. The mesoporous silica was characterized using BET surface area measurement and X-ray Photoelectron Spectroscopy surface analysis. The specific BET surface area was 794m2/g. From the XPS analysis, the Si2p binding energy is 103.7 eV while the O1s binding energy is 532.8eV indicating the formation of Si-O-Si bond which attributed to SiO2. Mesoporous silica has been found efficient to be solid catalyst for synthesis alkylpolyglucosides and easy to be separated. The reaction was carried out 8 hours at 110°C-120°C under vacuum condition. The mass determination of alkylpoluglucosides has been achieved by ESI LC-MS/MS (ToF) positive-mode giving a mass peak at m/z = 343.21 corresponding to [M++ of alkylmonoglucoside peak at retention time 11.0 min.

A method for the preparation of transparent mesoporous silica sol–gel monoliths containing grafted organic functional groups

2005 ◽  
Vol 15 (24) ◽  
pp. 2356 ◽  
Author(s):  
Cheri W. Clavier ◽  
D. Lynn Rodman ◽  
Joseph F. Sinski ◽  
Leonardo R. Allain ◽  
Hee-Jung Im ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Functional Groups ◽  
Sol Gel ◽  
Silica Sol ◽  
Organic Functional Groups

Optimization of synthesis parameters of mesoporous silica sol–gel thin films for application on 2024 aluminum alloy substrates

2013 ◽  
Vol 277 ◽  
pp. 201-210 ◽  
Author(s):  
Isaline Recloux ◽  
Marc Debliquy ◽  
Alexandra Baroni ◽  
Yoann Paint ◽  
Alex Lanzutti ◽  
...  
Keyword(s):  
Thin Films ◽  
Aluminum Alloy ◽  
Mesoporous Silica ◽  
Sol Gel ◽  
Silica Sol ◽  
2024 Aluminum Alloy ◽  
Synthesis Parameters

scholarly journals A simple approach to prepare fluorescent molecularly imprinted nanoparticles

RSC Advances ◽  
2021 ◽  
Vol 11 (13) ◽  
pp. 7732-7737
Author(s):  
Fenying Wang ◽  
Dan Wang ◽  
Tingting Wang ◽  
Yu Jin ◽  
Baoping Ling ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Sol Gel ◽  
Silica Sol ◽  
Simple Approach ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Low Toxicity ◽  
Good Biocompatibility ◽  
Molecularly Imprinted Nanoparticles

Fluorescent molecularly imprinted polymer (FMIP) gains great attention in many fields due to their low cost, good biocompatibility and low toxicity. Here, a high-performance FMIP was prepared based on the autocatalytic silica sol–gel reaction.

Silica Sol-Gel Supported Nickel Nano-Catalyst for Hydrogen Production Using Microreactors

2005 ◽  
Vol 885 ◽  
Author(s):  
Krithi Shetty ◽  
Shihuai Zhao ◽  
Wei Cao ◽  
Naidu V. Seetala ◽  
Debasish Kuila
Keyword(s):  
Steam Reforming ◽  
Average Pore Size ◽  
Sol Gel ◽  
Supported Catalyst ◽  
Silica Sol ◽  
Average Pore ◽  
Steam Reforming Of Methanol ◽  
Nano Catalyst ◽  
Before And After ◽  
Reforming Reactions

ABSTRACTThe goal of this research is to investigate the activities of a non-noble nano-catalyst (Ni/SiO2) using Si-microreactors for steam reforming of methanol to produce hydrogen for fuel cells. The supported catalyst was synthesized by sol-gel method using Ni (II) salts and Si(C2H5O)4 as starting materials. EDX results indicate that the actual loading of Ni (5-6%) is lower than the intended loading of 12 %. The specific surface area of the silica sol-gel encapsulated Ni nano-catalyst is 452 m2/g with an average pore size of ∼ 3 nm. Steam reforming reactions have been carried out in a microreactor with 50 µm channels in the temperature range of 180-240 °C and atmospheric pressure. Results show 53% conversion of methanol with a selectivity of 74 % to hydrogen at 5 l/min and 200 °C. The magnetic properties of the catalysts were performed using a Vibrating Sample Magnetometer (VSM) to study the activity of the catalysts before and after the steam reforming reactions. The VSM results indicate much higher activity in the microreactor compared to macro-reactor and Ni forms non-ferromagnetic species faster in the microreactor.

Characterization of the Effect of Formamide Additive on the Silica Sol-Gel-Glass Forming Process by1H NMR*

1987 ◽  
Vol 153 (Part_1_2) ◽  
pp. 27-36 ◽  
Author(s):  
H. Rosenberger ◽  
H. Bürger ◽  
H. Schütz ◽  
G. Scheler ◽  
G. Maenz
Keyword(s):  
Sol Gel ◽  
Silica Sol ◽  
Forming Process ◽  
Glass Forming
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