Synthesis and Characterization of Robust γ-Alumina Monolith with Hierarchical Pore Structure, High Specific Surface Area and Novel Macropore Morphology

2019 ◽  
Vol 48 (10) ◽  
pp. 1274-1277
Author(s):  
Weiya Yang ◽  
Fengxiang Ling ◽  
Huicheng Zhang ◽  
Shaojun Wang ◽  
Zhiqi Shen
Keyword(s):  
Specific Surface ◽  
Pore Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Specific Surface Area ◽  
Synthesis And Characterization ◽  
Hierarchical Pore Structure ◽  
Hierarchical Pore

scholarly journals Preparation and Microstructure Analysis of TiC-Derived Carbons with Hierarchical Pore Structure

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Jin Jia ◽  
Aiguo Zhou ◽  
Yuanyuan Zhu ◽  
Jiang Liu ◽  
Shihao Feng ◽  
...  
Keyword(s):  
Specific Surface ◽  
Pore Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
Amorphous Carbon ◽  
Microstructure Analysis ◽  
Temperature Range ◽  
Hierarchical Pore Structure ◽  
Hierarchical Pore ◽  
Small Parts

Carbide-derived carbons (CDCs) with hierarchical pore structure are prepared from commercial TiC powders by chlorination at temperature range of 600–1100°C. As-synthesized CDCs mainly consist of amorphous carbon and there exists a graphitization trend at chlorinating temperature above 800°C. If chlorinating temperature is below 1000°C, CDC particles maintain the shape of original TiC particles. Above 1000°C, obvious cracks appear in CDC particles and some particles are broken into small parts. The specific surface area (SSA) of CDCs is in the range from 672 m2/g to 1609 m2/g. The highest SSA is 1609 m2/g for CDC chlorinated at 1000°C. Most pores in these CDCs are micropores with the size of 0.7–2 nm. However, some mesopores and macropores also exist.

Synthesis and Characterization of High Specific Surface Area Vanadium Carbide; Application to Catalytic Oxidation

1997 ◽  
Vol 169 (1) ◽  
pp. 33-44 ◽  
Author(s):  
Frédéric Meunier ◽  
Pascale Delporte ◽  
Baudouin Heinrich ◽  
Christophe Bouchy ◽  
Claude Crouzet ◽  
...  
Keyword(s):  
Specific Surface ◽  
Catalytic Oxidation ◽  
Surface Area ◽  
Specific Surface Area ◽  
Vanadium Carbide ◽  
High Specific Surface Area ◽  
Synthesis And Characterization

Synthesis and characterization of ruthenium-containing ordered mesoporous carbon with high specific surface area

Carbon ◽  
2009 ◽  
Vol 47 (9) ◽  
pp. 2194-2199 ◽  
Author(s):  
Zhihong Ji ◽  
Shuguang Liang ◽  
Yanbin Jiang ◽  
Hao Li ◽  
Zhimin Liu ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Mesoporous Carbon ◽  
High Specific Surface Area ◽  
Ordered Mesoporous Carbon ◽  
Synthesis And Characterization ◽  
Ordered Mesoporous

Synthesis and characterization of ordered mesoporous silicon carbide with high specific surface area

2011 ◽  
Vol 65 (2) ◽  
pp. 185-187 ◽  
Author(s):  
Zhihong Ji ◽  
Weijian Han ◽  
Li Ye ◽  
Yanbin Jiang ◽  
Hao Li ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Specific Surface Area ◽  
Synthesis And Characterization ◽  
Mesoporous Silicon ◽  
Ordered Mesoporous

Preparation and Characterization of the Typical Pt-NSR Catalyst

2011 ◽  
Vol 412 ◽  
pp. 365-369
Author(s):  
Yuan Feng Huang ◽  
Wei Jun Zhang ◽  
Li Shen ◽  
Jin Hu ◽  
Zhuo Heng Li ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Performance Testing ◽  
High Specific Surface Area ◽  
Impregnation Method ◽  
Temperature Programmed Reduction ◽  
Temperature Programmed ◽  
Co Precipitation

A series of Ba-Al-O NSR supports and Pt/Ba-Al-O NSR catalysts are prepared by co-precipitation and impregnation method in this work. The catalyst and the support are characterized by XRD, SEM, SBET performance testing. The structure and texture of the supports is observed and discussed. The results of SBET indicate that the supports possess relative high specific surface area (94~110 m2/g). Temperature programmed reduction is characterized by means of H2-TPR.

Preparation and Characterization of Porous Yttrium Oxide Powders with High Specific Surface Area

2006 ◽  
Vol 24 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Yongxiu Li ◽  
Xiaoyun Lin ◽  
Yizheng Wang ◽  
Junming Luo ◽  
Weili Sun
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Yttrium Oxide ◽  
Specific Surface Area ◽  
High Specific Surface Area ◽  
Oxide Powders

scholarly journals Application of CoMn/CoFe layered double hydroxide based on metal-organic frameworks template to activate peroxymonosulfate for 2, 4-dichlorophenol degradation

2021 ◽  
Author(s):  
Chenyu Liu ◽  
Haitong Wei ◽  
Yanhui Gao ◽  
Ning Wang ◽  
Xiaoying Yuan ◽  
...  
Keyword(s):  
Specific Surface ◽  
Pore Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
Active Sites ◽  
Metal Organic Frameworks ◽  
High Specific Surface Area ◽  
State Transformation ◽  
Alkaline Conditions ◽  
Metal Organic

Abstract Metal-Organic Frameworks (MOFs) have unique properties and stable structure, which have been widely used as templates/precursors to prepare well-developed pore structure and high specific surface area materials. In this article, an innovative and facile method of crystal reorganization was designed by using MOFs as sacrificial templates to prepare LDH nano-layer sheet structure through a pseudomorphic conversion process under alkaline conditions. The obtained CoMn-LDH and CoFe-LDH catalysts broke the ligand of MOFs and reorganized the structure on the basis of retaining a high specific surface area and a large number of pores, which have higher specific surface area and well-developed pore structure than LDH catalysts prepared by traditional methods, and thus provide more active sites to activate PMS. Due to the unique framework structure of MOFs, the MOF derived CoMn-LDH and CoFe-LDH catalysts could provide more active sites to activate PMS, and achieve a 2, 4-dichlorophenol (2, 4-DCP) degradation of 99.3% and 99.2% within 20 min, respectively. Besides, the two LDH catalysts displayed excellent degradation performance for bisphenol A (BPA), ciprofloxacin (CIP) and 2, 4-dichlorophenoxyacetic acid (2, 4-D). XPS indicated that the valence state transformation of metal elements participated in PMS activation. EPR manifested sulfate radical () and singlet oxygen (1O2) were the main species for degrading pollutants. In addition, after the three-cycle experiment, the CoMn-LDH and CoFe-LDH catalysts also showed long-term stability with a slight activity decrease in the third cycle. The phytotoxicity assessment determined by the germination of mung beans proved that PMS activation by MOFs-derived LDH catalyst can basically eliminate the phytotoxicity of 2, 4-D solution. This research not only developed high-activity LDH catalysts for PMS activation, but also expanded the environmental applications of MOFs derivants.

BCN nanosheets templated by g-C3N4 for high performance capacitive deionization

2018 ◽  
Vol 6 (30) ◽  
pp. 14644-14650 ◽  
Author(s):  
Shiyong Wang ◽  
Gang Wang ◽  
Tingting Wu ◽  
Yunqi Zhang ◽  
Fei Zhan ◽  
...  
Keyword(s):  
Specific Surface ◽  
Pore Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Performance ◽  
Electrode Materials ◽  
High Specific Surface Area ◽  
Capacitive Deionization ◽  
First Time

BCN nanosheets show a pore structure with a high specific surface area and are investigated as CDI electrode materials for the first time.

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