mesoporous sic sol gel process high surface

The role of polymethylhydrosiloxane in the sol-gel …

1/1/2011· High surface area porous silicon carbide was synthesized via a modified sol-gel method. In the sol-gel method, furfuryl alcohol and tetraethoxysilane were used respectively as carbon and silicon precursors, polymethylhydrosiloxane (PMHS) was employed as a pore-adjusting agent for preparing a carbonaceous silica xerogel. SiC was obtained by the carbothermal reduction of the carbonaceous …

Preparation of monolith SiC aerogel with high surface …

1/7/2014· The as-synthesized SiC aerogel presented typical mesoporous structure and possessed high porosity (91.8%), high surface area (328 m 2 /g) and large pore volume (2.28 cm 3 /g). Carbothermal reduction mechanism was also discussed based on the experiment and …

Preparation of Ordered Mesoporous SiC from …

18/2/2006· The mesoporous SiC materials, synthesized from both types of templates possessed high Brunauer−Emmett−Teller (BET) surface areas in the range of 250−260 m 2 …

Preparation of Ordered Mesoporous SiC from …

18/2/2006· The mesoporous SiC materials, synthesized from both types of templates possessed high Brunauer−Emmett−Teller (BET) surface areas in the range of 250−260 m 2 …

mesoporous sic sol gel high surface importers

Previously porous SiC was mostly obtained by a simple sol–gel or reactive replica technique which can only produce a material with low or medium surface area (o 50 m2 g 1). Here we report a new hybrid sol–gel approach to synthesize mesostructured SiC with high surface area …

Mesoporous silica nanoparticles prepared by different …

22/2/2021· Calcination process was conducted using the above mentioned conditions in sol–gel method. 2.2.3 Hydrothermal synthesis Solution of TEOS was prepared as 10 ml TEOS were dissolved in 80 ml DW with pH ≈ 2 by adding HCl and stirring for 2 h.

SiC mesoporous meranes for sulfuric acid decomposition at high temperatures in the iodine–sulfur process

SiC mesoporous meranes for sulfuric acid decomposition at high temperatures in the iodine– sulfur process† Xin Yu, Qing Wang, Hiroki Nagasawa, Masakoto Kanezashi and Toshinori Tsuru * Inorganic microporous materials have shown promise for the fabriion

JOURNAL OF MATERIALS SCIENCE (2005) LETTERS High surface …

In summary, high surface area SiC can be synthe-sized through nanocasting and carbothermal reduction process. The advantage of this method is that carbon canbeinfiltratednotonlyinthechannelsofSBA

Synthesis of mesoporous carbon-bonded TiC/SiC …

Synthesis of mesoporous carbon-bonded TiC/SiC ceramics by carbothermal reduction of sol-gel derived monolithic precursor Author: Zhong, Jie Author: Liang, Shuquan

Synthesis of Hollow Sphere and 1D Structural Materials …

25/8/2017· Hollow mesoporous silica spheres which have been widely used in the fields of delivery, separation and alysis can be also synthesized through the sol-gel method. Wang et al. [] synthesized hollow mesoporous silica spheres using the sol-gel/emulsion method with cetyltrimethylammonium bromide (CTAB) as the surfactant to stabilize the tetraethoxysilane (TEOS) droplet, and the effects of

Sol–Gel Synthesis of Spherical Mesoporous High-Entropy …

Herein, a wet-chemistry sol–gel strategy is demonstrated for the synthesis of spherical mesoporous HEOs (e.g., Ni–Co–Cr–Fe–Mn oxide) with high specific surface area (42–143 m2/g), large pore size (5.5–8.3 nm), unique spherical morphology (∼55 nm), and

Latest Sol-Gel papers

Sol-gel glass is not necessarily an inert matrix for enzyme encapsulation. alysis of sulfoxidation by silica Kadnikova, EN; Kostic, NM Journal of Non-Crystalline Solids, Vol.283 N 1-3 2001, 63 -68 Preparation of mesoporous silica materials with non-surfactant

High surface area mesoporous nanocrystalline lanthanum …

1/12/2008· The sol–gel methodology ensured high surface area since the gelation of the stable sol resulted in a gel with lots of inter-agglomerate and inter-aggregate pores. Upon calcination these pores collapsed due to the drying stress exerted by the evaporating pore fluid thereby reducing surface area to some extent depending on the temperature of calcination and nature of the pore fluid.

Synthesis of Mesoporous Carbon‐Bonded TiC/SiC …

14/6/2011· Synthesis of Mesoporous Carbon‐Bonded TiC/SiC Composites by Direct Carbothermal Reduction of Sol–Gel Derived Monolithic Precursor Jie Zhong School of Materials Science and Engineering, Central South University, Changsha, 410083 China

Mesporous 3 C -SiC Hollow Fibers | Scientific Reports

15/5/2017· It is promising that this work would inspire the study of mesoporous SiC hollow fibers with high surface area, Guo, X. Y. & Jin, G. Q. Pore-size control in the sol–gel synthesis of

Mesoporous silica nanoparticles prepared by different methods …

In the current investigation, mesoporous silica nanoparticles were obtained by various techniques, namely sol–gel (S1), micro‐emulsion (S2) and hydrothermal synthesis (S3). The effect of those methods on the finalfeatures of the obtained mesoporous silica

Sol-Gel Synthesis and Subsequent Flame-Based Metal Decoration of Mesoporous …

Sol-Gel Synthesis and Subsequent Flame-Based Metal Decoration of Mesoporous Silica N anomaterials By Naveshkaanth Alexander May 15 th 2019 A thesis submitted to the Faculty of the Graduate School of The University at Buffalo, State University of New York

mesoporous sic sol gel high surface importers

The resulting mesoporous alumina materials feature high surface areas (400 m2 g−1), large pore volumes (0.8 mL g−1) and the γ … Sol–gel synthesis of SiC–TiO2 nanoparticles for … 09.01.2007· SiC nanoparticles were coated with TiO 2 using a sol–gel

Synthesis and characterization of mesoporous silicon …

19/6/2003· The sol–gel method has also been used to prepare high surface area SiC materials [19]. In the present paper a modified sol–gel route is proposed for the preparation of high surface area mesoporous SiC. The mesoporous SiC was obtained by heating a binary carbonaceous silicon xerogel under high temperatures.

Mesporous 3 C -SiC Hollow Fibers | Scientific Reports

15/5/2017· It is promising that this work would inspire the study of mesoporous SiC hollow fibers with high surface area, Guo, X. Y. & Jin, G. Q. Pore-size control in the sol–gel synthesis of

Aerosol-assisted deposition of surfactant-templated mesoporous …

The sol–gel process is a well-established route for the synthesis of a variety of porous inorganic meranes with high thermal and chemical sta-bility, controlled microstructure, and pore size spanning the micro- and mesoporous range. The most common sol–gel

Mesoporous Titanium Dioxide: Synthesis and …

9/10/2018· For instance, Liu and coworkers prepared mesoporous TiO 2 with anatase structure via sol–gel reaction [].It was found that the products have specific surface area, total pore volume and average pore size with 106 m 2 ·g −1, 0.17 cm 3 ·g −1 and …

Synthesis of mesoporous La2Zr2O7 with high surface …

1/11/2016· Thus, one can obtain mesoporous LZO with high surface area by coining the epoxide-mediated sol-gel process and solvothermal treatment. For example, Inoue et al. [36] prepared nanocrystalline tetragonal ZrO 2 particles with diameter of 4–10 nm and surface area of 90–160 m 2 /g.

Synthesis of Mesoporous Carbon‐Bonded TiC/SiC …

14/6/2011· Synthesis of Mesoporous Carbon-Bonded TiC/SiC Composites by Direct Carbothermal Reduction of Sol–Gel Derived Monolithic Precursor Jie Zhong , School of Materials Science and Engineering, Central South University, Changsha, 410083 China

Synthesis and characterization of mesoporous silicon …

A modified sol–gel method is proposed for the preparation of mesoporous silicon carbide. In this method, tetraethoxysilane (TEOS) and phenolic resin are used for preparing a binary carbonaceous silicon xerogel, and nickel nitrate is employed in the sol–gel process as a pore-adjusting reagent. SiC was produced in the carbothermal reduction of the

Facile fabriion of three-dimensional mesoporous …

15/10/2013· The U.S. Department of Energy''s Office of Scientific and Technical Information OSTI.GOV Journal Article: Facile fabriion of three-dimensional mesoporous Si/SiC composites via one-step magnesiothermic reduction at relative low temperature

SiC mesoporous meranes for sulfuric acid decomposition at high temperatures in the iodine–sulfur process

SiC mesoporous meranes for sulfuric acid decomposition at high temperatures in the iodine– sulfur process† Xin Yu, Qing Wang, Hiroki Nagasawa, Masakoto Kanezashi and Toshinori Tsuru * Inorganic microporous materials have shown promise for the fabriion