Insights into the Morphology Effect of Ceria on the Catalytic Performance of NiO–PdO/CeO2 Nanoparticles for Thermo-oxidation of n-C7 Asphaltenes under Isothermal Heating at Different Pressures

2021 ◽  
Author(s):  
Oscar E. Medina ◽  
Jaime Gallego ◽  
Agustín F. Pérez-Cadenas ◽  
Francisco Carrasco-Marín ◽  
Farid B. Cortés ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Ceo2 Nanoparticles ◽  
Isothermal Heating ◽  
Morphology Effect

scholarly journals A diffusion anisotropy descriptor links morphology effects of H-ZSM-5 zeolites to their catalytic cracking performance

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Xiaoliang Liu ◽  
Jing Shi ◽  
Guang Yang ◽  
Jian Zhou ◽  
Chuanming Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Cracking ◽  
Catalytic Performance ◽  
Zeolite Catalysts ◽  
Time Resolved ◽  
Cracking Performance ◽  
Morphology Effect ◽  
Ft Ir ◽  
The Difference ◽  
Dynamics Simulations

AbstractZeolite morphology is crucial in determining their catalytic activity, selectivity and stability, but quantitative descriptors of such a morphology effect are challenging to define. Here we introduce a descriptor that accounts for the morphology effect in the catalytic performances of H-ZSM-5 zeolite for C4 olefin catalytic cracking. A series of H-ZSM-5 zeolites with similar sheet-like morphology but different c-axis lengths were synthesized. We found that the catalytic activity and stability is improved in samples with longer c-axis. Combining time-resolved in-situ FT-IR spectroscopy with molecular dynamics simulations, we show that the difference in catalytic performance can be attributed to the anisotropy of the intracrystalline diffusive propensity of the olefins in different channels. Our descriptor offers mechanistic insight for the design of highly effective zeolite catalysts for olefin cracking.

Morphology effect of MnO2 promoter to the catalytic performance of Pt toward methanol electrooxidation reaction

2019 ◽  
Vol 44 (7) ◽  
pp. 3744-3750 ◽  
Author(s):  
Yuan-Yuan Feng ◽  
Gui-Hua Song ◽  
Qiang Zhang ◽  
Jian-Ning Lv ◽  
Xi-Yu Hu ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Methanol Electrooxidation ◽  
Morphology Effect

scholarly journals Diffusion anisotropy descriptor revealing morphology effect of H-ZSM-5 zeolite for olefin catalytic cracking

2021 ◽  
Author(s):  
Xiaoliang Liu ◽  
Jing Shi ◽  
Guang Yang ◽  
Jian Zhou ◽  
Chuanming Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Cracking ◽  
Quantitative Description ◽  
Catalytic Performance ◽  
Zeolite Catalysts ◽  
Diffusion Anisotropy ◽  
Dynamic Simulations ◽  
Time Resolved ◽  
Zeolite Catalysis ◽  
Morphology Effect

Abstract Zeolite morphology is vital in determining catalytic activity, selectivity and stability in zeolite catalysis, while quantitative description of morphology effect is great challenging but highly desirable. Herein, a descriptor to elucidate the morphology effect is proposed by revealing the diffusion anisotropy in straight and sinusoidal channels of H-ZSM-5 zeolite for olefin catalytic cracking. A series of H-ZSM-5 zeolites with similar nano-sheet morphology were precisely synthesized in which only the length in c-axis varies. It is unexpectedly demonstrated that the catalytic activity and stability can be obviously improved by employing samples with longer length in c-axis. Combining time-resolved in-situ FT-IR spectroscopy with molecular dynamic simulations, we revealed that the difference in catalytic performance can be attributed to the intracrystalline diffusive propensity in different channels. This work not only provides a clear descriptor revealing morphology effect, but also offers deep insight into design of highly effective zeolite catalysts for olefin catalytic cracking.

Influence of CeO2 nanoparticles synthesized from plant extracts on the catalytic performance of isolated catalase from carrots

2022 ◽  
Author(s):  
Jitendra Kumar Sharma ◽  
Meera Yadav ◽  
Anindita Hazarika ◽  
Hardeo Singh Yadav ◽  
Nene Takio ◽  
...  
Keyword(s):  
Plant Extracts ◽  
Catalytic Performance ◽  
Ceo2 Nanoparticles

Histidine-assisted synthesis of CeO2 nanoparticles for improving the catalytic performance of Pt-based catalysts in methanol electrooxidation

2018 ◽  
Vol 42 (22) ◽  
pp. 18159-18165 ◽  
Author(s):  
Shengdong Dai ◽  
Jinli Zhang ◽  
Yan Fu ◽  
Wei Li
Keyword(s):  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Ceo2 Nanoparticles ◽  
Methanol Electrooxidation ◽  
Pt Catalysts

Histidine-assisted CeO2 Pt catalysts with more oxygen vacancies are synthesized to improve the catalytic performance in methanol electrooxidation.

Rapid hydrothermal synthesis of CeO2 nanoparticles with (220)-dominated surface and its CO catalytic performance

2015 ◽  
Vol 62 ◽  
pp. 148-152 ◽  
Author(s):  
Anran Xie ◽  
Shuping Wang ◽  
Wei Liu ◽  
Jingcai Zhang ◽  
Yanzhao Yang ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Catalytic Performance ◽  
Ceo2 Nanoparticles
Sign in / Sign up

Export Citation Format

Share Document