A two-step synthesis of Fe-substituted hexaaluminates with enhanced surface area and activity in methane catalytic combustion

2016 ◽  
Vol 6 (13) ◽  
pp. 4962-4969 ◽  
Author(s):  
Fei Huang ◽  
Xiaodong Wang ◽  
Aiqin Wang ◽  
Jinming Xu ◽  
Tao Zhang
Keyword(s):  
High Activity ◽  
Surface Area ◽  
Catalytic Combustion ◽  
High Surface ◽  
High Surface Area ◽  
Step Method ◽  
Methane Catalytic Combustion ◽  
Enhanced Surface

High-surface-area Fe-substituted hexaaluminates prepared by a new two-step method exhibited high activity for methane catalytic combustion.

One-pot aerobic oxidative sulfonamidation of aromatic thiols with ammonia by a dual-functional β-MnO2 nanocatalyst

2020 ◽  
Vol 56 (14) ◽  
pp. 2095-2098 ◽  
Author(s):  
Eri Hayashi ◽  
Yui Yamaguchi ◽  
Yusuke Kita ◽  
Keigo Kamata ◽  
Michikazu Hara
Keyword(s):  
High Activity ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
One Pot ◽  
Dual Functional ◽  
Aromatic Thiols ◽  
The One

High-surface-area β-MnO2 nanoparticles exhibited high activity for the one-pot oxidative sulfonamidation of thiols to sulfonamides using O2 and NH3.

Unique perforated graphene derived from Bougainvillea flowers for high-power supercapacitors: a green approach

Nanoscale ◽  
2017 ◽  
Vol 9 (14) ◽  
pp. 4801-4809 ◽  
Author(s):  
Rajendra P. Panmand ◽  
Purnima Patil ◽  
Yogesh Sethi ◽  
Sunil R. Kadam ◽  
Milind V. Kulkarni ◽  
...  
Keyword(s):  
Surface Area ◽  
High Power ◽  
High Surface ◽  
High Surface Area ◽  
Single Step ◽  
Step Method ◽  
Green Approach ◽  
Template Free ◽  
First Time

Herein, we demonstrated a green approach for the synthesis of high surface area (850 m2 g−1) mesoporous perforated graphene (PG) from Bougainvillea flower for the first time using a template free single-step method.

Promoting the activity and selectivity of high surface area Ni–Ce–O mixed oxides by gold deposition for VOC catalytic combustion

2011 ◽  
Vol 175 ◽  
pp. 271-278 ◽  
Author(s):  
Benjamín Solsona ◽  
Tomás Garcia ◽  
Elvira Aylón ◽  
Ana M. Dejoz ◽  
Isabel Vázquez ◽  
...  
Keyword(s):  
Surface Area ◽  
Catalytic Combustion ◽  
Mixed Oxides ◽  
High Surface ◽  
High Surface Area ◽  
Gold Deposition

scholarly journals Hydrothermal Synthesis of Lanthanide Stannates Pyrochlore Nanocrystals for Catalytic Combustion of Soot Particulates

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Xiaomin Zhang ◽  
Xuhui Liu ◽  
Peng Lu ◽  
Liguo Wang ◽  
Zhaoliang Zhang ◽  
...  
Keyword(s):  
Surface Area ◽  
Catalytic Combustion ◽  
High Surface ◽  
High Surface Area ◽  
Pyrochlore Structure ◽  
Soot Combustion ◽  
Hydrothermal Route ◽  
Spherical Structure ◽  
Surface Oxygen Vacancy ◽  
Gas Molecule

Nanocrystalline La2Sn2O7and La2Sn1.8Co0.2O7with a phase-pure pyrochlore structure were synthesized by a hydrothermal method, and their catalytic activity was investigated for soot combustion. The as-synthesized catalysts presented relatively larger surface area, and pore volume, which was benefit to the gas molecule diffusion in the reaction. A uniform spherical structure with particle size of 200–500 nm was found in SEM. The samples via hydrothermal route are more active for catalytic soot combustion, ascribing to the spherical morphology, high surface area and improved oxygen mobility. After Co, the reducibility was improved and surface oxygen vacancy was produced, resulting in the enhanced activity and selectivity to CO2formation.

scholarly journals Niobium oxide prepared through a novel supercritical-CO2-assisted method as a highly active heterogeneous catalyst for the synthesis of azoxybenzene from aniline

2019 ◽  
Vol 21 (21) ◽  
pp. 5852-5864 ◽  
Author(s):  
Yehan Tao ◽  
Bhawan Singh ◽  
Vanshika Jindal ◽  
Zhenchen Tang ◽  
Paolo P. Pescarmona
Keyword(s):  
High Activity ◽  
Surface Area ◽  
Heterogeneous Catalyst ◽  
Oxidative Coupling ◽  
Supercritical Co2 ◽  
Niobium Oxide ◽  
High Surface ◽  
High Surface Area ◽  
Highly Active

High-surface area Nb2O5 nanoparticles synthesised by a novel supercritical-CO2-assisted method displayed extremely high activity as heterogeneous catalyst in the oxidative coupling of aniline to azoxybenzene using the green oxidant H2O2.

High Sensitivity Photonic Crystal Biosensor Incorporating Nanorod Structures for Enhanced Surface Area

2007 ◽  
Vol 1010 ◽  
Author(s):  
Wei Zhang ◽  
Nikhil Ganesh ◽  
Ian D. Block ◽  
Brian T. Cunningham
Keyword(s):  
Photonic Crystal ◽  
Surface Area ◽  
Mass Density ◽  
High Surface ◽  
High Surface Area ◽  
High Sensitivity ◽  
Porous Titanium ◽  
Glancing Angle ◽  
Adsorbed Mass ◽  
Enhanced Surface

AbstractWe report efforts at enhancement of the surface area of a photonic crystal biosensor through incorporation of a porous titanium dioxide film into the device. The film possessing the structure of nanorods is deposited by the glancing angle deposition technique. Results for detection of polymer films, large proteins and small molecules indicate up to a four-fold enhancement of detected adsorbed mass density for high surface area sensors, compared with sensors without the high surface area coating.

Synthesis of the high-surface-area CexBa1−xMnAl11Oycatalyst in reverse microemulsions using inexpensive inorganic salts as precursors

2005 ◽  
Vol 7 (7) ◽  
pp. 493-499 ◽  
Author(s):  
Fei Teng ◽  
Ping Xu ◽  
Zhijian Tian ◽  
Guoxing Xiong ◽  
Yunpeng Xu ◽  
...  
Keyword(s):  
High Activity ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Methane Combustion ◽  
Inorganic Salts ◽  
Reverse Microemulsions

The CexBa1−xMnAl11Ox catalysts are synthesized in reverse microemulsions using inexpensive inorganic salts as precursors, which have high surface area and high activity for methane combustion.

scholarly journals Low-Temperature Thermal Degradation of Disinfected COVID-19 Non-Woven Polypropylene—Based Isolation Gown Wastes into Carbonaceous Char

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3980
Author(s):  
M. M. Harussani ◽  
Umer Rashid ◽  
S. M. Sapuan ◽  
Khalina Abdan
Keyword(s):  
Thermal Decomposition ◽  
Activated Carbon ◽  
Surface Area ◽  
Batch Reactor ◽  
High Surface ◽  
High Surface Area ◽  
Pyrolysis Model ◽  
Horizontal Furnace ◽  
Pyrolytic Temperature ◽  
Enhanced Surface

Yields of carbonaceous char with a high surface area were enhanced by decreasing the temperature to improve the conversion of hazardous plastic polypropylene (PP), the major component in abundantly used isolation gowns. This study applied pyrolysis with different low pyrolytic temperatures to convert disinfected PP-based isolation gown waste (PP-IG) into an optimised amount of char yields. A batch reactor with a horizontal furnace was used to mediate the thermal decomposition of PP-IG. Enhanced surface area and porosity value of PP-IG derived char were obtained via an optimised slow pyrolysis approach. The results showed that the amount of yielded char was inversely proportional to the temperature. This process relied heavily on the process parameters, especially pyrolytic temperature. Additionally, as the heating rate decreased, as well as longer isothermal residence time, the char yields were increased. Optimised temperature for maximum char yields was recorded. The enhanced SBET values for the char and its pore volume were collected, ~24 m2 g−1 and ~0.08 cm3 g−1, respectively. The char obtained at higher temperatures display higher volatilisation and carbonisation. These findings are beneficial for the utilisation of this pyrolysis model in plastic waste management and conversion of PP-IG waste into char for further activated carbon and fuel briquettes applications, with the enhanced char yields, amidst the COVID-19 pandemic.

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