scholarly journals Ruthenium Effect on Formation Mechanism and Structural Characteristics of LaCo1–xRuxO3 Perovskites and Its Influence on Catalytic Performance for Hydrocarbon Oxidative Reforming

2015 ◽  
Vol 119 (29) ◽  
pp. 16708-16723 ◽  
Author(s):  
Noelia Mota ◽  
Laura Barrio ◽  
Consuelo Alvarez-Galván ◽  
François Fauth ◽  
Rufino M. Navarro ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Structural Characteristics ◽  
Catalytic Performance ◽  
Oxidative Reforming

Highly mesoporous SAPO-11 molecular sieves with tunable acidity: facile synthesis, formation mechanism and catalytic performance in hydroisomerization of n-dodecane

2017 ◽  
Vol 7 (23) ◽  
pp. 5775-5784 ◽  
Author(s):  
Shuo Tao ◽  
Xiaolei Li ◽  
Guang Lv ◽  
Congxin Wang ◽  
Renshun Xu ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Molecular Sieves ◽  
Catalytic Performance ◽  
Excellent Performance ◽  
Facile Synthesis ◽  
Dry Gel Conversion

Hierarchical SAPO-11 molecular sieves with tunable acidity fabricated by a facile dry-gel conversion approach show excellent performance in hydroisomerization of n-dodecane.

Zeolite microspheres with hierarchical structures: formation, mechanism and catalytic performance

2011 ◽  
Vol 21 (40) ◽  
pp. 16223 ◽  
Author(s):  
Yi Shi ◽  
Xiang Li ◽  
Junkai Hu ◽  
Jinhua Lu ◽  
Yuchun Ma ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Hierarchical Structures ◽  
Catalytic Performance

Shape-controlled synthesis of three-dimensional branched CdS nanostructure arrays: structural characteristics and formation mechanism

CrystEngComm ◽  
2013 ◽  
Vol 15 (5) ◽  
pp. 1007-1014 ◽  
Author(s):  
Qianqian Shen ◽  
Jinbo Xue ◽  
Jian Liu ◽  
Husheng Jia ◽  
Xuguang Liu ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Controlled Synthesis ◽  
Nanostructure Arrays ◽  
Shape Controlled

scholarly journals Catalysis of Organic Pollutants Abatement Based on Pt-Decorated Ag@Cu2O Heterostructures

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2721
Author(s):  
Xiaolong Zhang ◽  
Bingbing Han ◽  
Yaxin Wang ◽  
Yang Liu ◽  
Lei Chen ◽  
...  
Keyword(s):  
Catalytic Reduction ◽  
Structural Characteristics ◽  
Organic Pollutant ◽  
Pt Nanoparticles ◽  
Catalytic Performance ◽  
Pt Nanoparticle ◽  
Local Surface ◽  
Local Surface Plasmon Resonance ◽  
Cu2o Nanoparticles ◽  
Excellent Catalytic Performance

Pt-decorated Ag@Cu2O heterostructures were successfully synthesized using a simple and convenient method. The Pt nanoparticle density on the Ag@Cu2O can be controlled by changing the concentration of the Pt precursor. The synthesized Ag@Cu2O–Pt nanoparticles exhibited excellent catalytic performance, which was greatly affected by changes in the Ag@Cu2O–Pt structure. To optimize the material’s properties, the synthesized Ag@Cu2O–Pt nanoparticles were used to catalyze toxic pollutants and methyl orange (MO), and nontoxic products were obtained by catalytic reduction. The Pt-decorated Ag@Cu2O nanoparticles showed excellent catalytic activity, which significantly decreased the pollutant concentration when the nanoparticles were used for catalytic reduction. The redistribution of charge transfer is the nanoparticles’ main contribution to the catalytic degradation of an organic pollutant. This Pt-decorated Ag@Cu2O material has unique optical and structural characteristics that make it suitable for photocatalysis, local surface plasmon resonance, and peroxide catalysis.

scholarly journals Catalytic Performance of SBA-15-Supported Poly (Styrenesulfonic Acid) in the Esterification of Acetic Acid with n-Heptanol

2020 ◽  
Vol 10 (17) ◽  
pp. 5835
Author(s):  
Abdulaziz Ali Alghamdi ◽  
Yahya Musawi Mrair ◽  
Fahad A. Alharthi ◽  
Abdel-Basit Al-Odayni
Keyword(s):  
Acetic Acid ◽  
Sulfonic Acid ◽  
Active Sites ◽  
Structural Characteristics ◽  
High Surface ◽  
High Surface Area ◽  
Reaction Times ◽  
Hydrophobic Surface ◽  
Catalytic Performance ◽  
Catalyst Load

A polystyrene sulfonic acid-functionalized mesoporous silica (SBA-15-PSSA) catalyst was synthesized via an established multistep route, employing 2-bromo-2-methylpropionyl bromide as initiator of atom transfer radical polymerization. Fourier-transform infrared spectroscopy, thermogravimetric/differential thermal, Brunauer–Emmett–Teller, and transmission electron microscopy analyses revealed outstanding structural characteristics of the catalyst, including highly ordered mesopores, high surface area (726 m2/g), and adequate estimated concentrations of active sites (0.70 mmol H+/g). SBA-15-PSSA’s catalytic performance was evaluated in the esterification of acetic acid and n-heptanol as a model system at various temperatures (50–110 °C), catalyst loads (0.1–0.3 g), and reaction times (0–160 min). The conversion percentage of acetic acid was found to increase with the temperature, catalyst load, and reaction time. Furthermore, results indicated a fast conversion in the first 20 min of the reaction, with remarkable conversion values at 110 °C, reaching 86%, 94%, and 97% when the catalyst load was 0.1, 0.2, and 0.3 g, respectively; notably, at this temperature, 100% conversation was achieved after 60 min. At 110 °C, the reaction conducted in the presence of 0.3 g of catalyst displayed more than 6.4 times the efficiency of the uncatalyzed reaction. Such activity is explained by the concomitant presence in the polymer of strong sulfonic acid moieties and a relatively high hydrophobic surface, with adequate numbers of active sites for ester production.

Structural Characteristics and Formation Mechanism in the Micangshan Foreland, South China

2009 ◽  
Vol 83 (1) ◽  
pp. 81-91 ◽  
Author(s):  
Huaming XU ◽  
Shu LIU ◽  
Guosheng QU ◽  
Yanfeng LI ◽  
Gang SUN ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
South China ◽  
Structural Characteristics
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