High-Temperature Stable Ni Nanoparticles for the Dry Reforming of Methane

ACS Catalysis ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 7238-7248 ◽  
Author(s):  
Katharina Mette ◽  
Stefanie Kühl ◽  
Andrey Tarasov ◽  
Marc G. Willinger ◽  
Jutta Kröhnert ◽  
...  
Keyword(s):  
High Temperature ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Ni Nanoparticles

scholarly journals Embedded Ni nanoparticles in CeZrO2 as stable catalyst for dry reforming of methane

2020 ◽  
Vol 268 ◽  
pp. 118387 ◽  
Author(s):  
André L.A. Marinho ◽  
Raimundo C. Rabelo-Neto ◽  
Florence Epron ◽  
Nicolas Bion ◽  
Fabio S. Toniolo ◽  
...  
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Ni Nanoparticles ◽  
Stable Catalyst

In situ preparation of Ni nanoparticles in cerium-modified silica aerogels for coking- and sintering-resistant dry reforming of methane

2017 ◽  
Vol 41 (12) ◽  
pp. 4869-4878 ◽  
Author(s):  
Xiaoyuan Zhao ◽  
Meirong Lu ◽  
Hongrui Li ◽  
Jianhui Fang ◽  
Liyi Shi ◽  
...  
Keyword(s):  
Silica Aerogels ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Ni Nanoparticles ◽  
Modified Silica ◽  
In Situ Preparation

Ni nanoparticles in nanochannels of cerium-modified silica aerogels were in situ prepared for coking-resistant dry reforming of methane.

scholarly journals Encapsulated Ni@La2O3/SiO2 Catalyst with a One-Pot Method for the Dry Reforming of Methane

Catalysts ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 38 ◽  
Author(s):  
Luhui Wang ◽  
Rong Hu ◽  
Hui Liu ◽  
Qinhong Wei ◽  
Dandan Gong ◽  
...  
Keyword(s):  
Carbon Deposition ◽  
Synthesis Method ◽  
Space Velocity ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Catalyst Characterization ◽  
Porous System ◽  
Ni Nanoparticles ◽  
Solution Combustion ◽  
One Pot

Ni nanoparticles encapsulated within La2O3 porous system (Ni@La2O3), the latter supported on SiO2 (Ni@La2O3)/SiO2), effectively inhibit carbon deposition for the dry reforming of methane. In this study, Ni@La2O3/SiO2 catalyst was prepared using a one-pot colloidal solution combustion method. Catalyst characterization demonstrates that the amorphous La2O3 layer was coated on SiO2, and small Ni nanoparticles were encapsulated within the layer of amorphous La2O3. During 50 h of dry reforming of methane at 700 °C and using a weight hourly space velocity (WHSV) of 120,000 mL gcat−1 h−1, the CH4 conversion obtained was maintained at 80%, which is near the equilibrium value, while that of impregnated Ni–La2O3/SiO2 catalyst decreased from 63% to 49%. The Ni@La2O3/SiO2 catalyst exhibited very good resistance to carbon deposition, and only 1.6 wt% carbon was formed on the Ni@La2O3/SiO2 catalyst after 50 h of reaction, far lower than that of 11.5 wt% deposited on the Ni–La2O3/SiO2 catalyst. This was mainly attributed to the encapsulated Ni nanoparticles in the amorphous La2O3 layer. In addition, after reaction at 700 °C for 80 h with a high WHSV of 600,000 mL gcat−1 h−1, the Ni@La2O3/SiO2 catalyst exhibited high CH4 conversion rate, ca. 10.10 mmol gNi−1 s−1. These findings outline a simple synthesis method to prepare supported encapsulated Ni within a metal oxide porous structure catalyst for the dry reforming of methane reaction.

Facile one-pot synthesis of highly dispersed Ni nanoparticles embedded in HMS for dry reforming of methane

2017 ◽  
Vol 313 ◽  
pp. 1370-1381 ◽  
Author(s):  
Mingzhi Wang ◽  
Qiulin Zhang ◽  
Tengfei Zhang ◽  
Yiru Wang ◽  
Jing Wang ◽  
...  
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Ni Nanoparticles ◽  
One Pot ◽  
One Pot Synthesis ◽  
Highly Dispersed

Al2O3-Coated Ni/CeO2 nanoparticles as coke-resistant catalyst for dry reforming of methane

2020 ◽  
Vol 10 (24) ◽  
pp. 8283-8294
Author(s):  
Euiseob Yang ◽  
Eonu Nam ◽  
Jihyeon Lee ◽  
Hojeong Lee ◽  
Eun Duck Park ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Catalyst Deactivation ◽  
Atomic Layer ◽  
Dry Reforming ◽  
Ceo2 Nanoparticles ◽  
Dry Reforming Of Methane ◽  
Ni Nanoparticles ◽  
Layer Deposition

To mitigate catalyst deactivation during the dry reforming of methane, Ni/CeO2 catalysts composed of monodisperse Ni nanoparticles supported on CeO2 nanorods are designed and coated with Al2O3 layers by atomic layer deposition.

Sinter-resistant Rh nanoparticles supported on γ-Al2O3 nanosheets as an efficient catalyst for dry reforming of methane

Nanoscale ◽  
2020 ◽  
Vol 12 (40) ◽  
pp. 20922-20932
Author(s):  
Shasha Chu ◽  
Zhengmiao Cai ◽  
Mingzhi Wang ◽  
Yanping Zheng ◽  
Yongke Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Surface Structure ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Efficient Catalyst ◽  
Unique Surface

The unique surface structure of γ-Al2O3 nanosheets plays a key role in increasing the dispersion of Rh species in the catalyst and preventing it from sintering at high temperature under both oxidizing and reducing atmospheres.

scholarly journals Role of CeO2-ZrO2Support for Structural, Textural and Functional Properties of Ni-based Catalysts Active in Dry Reforming of Methane

2019 ◽  
Vol 108 ◽  
pp. 02018 ◽  
Author(s):  
Andrzej Adamski ◽  
Piotr Legutko ◽  
Katarzyna Dziadek ◽  
Ksenia Parkhomenko ◽  
Cyril Aymonier ◽  
...  
Keyword(s):  
High Temperature ◽  
Functional Properties ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Methane Reforming ◽  
Temperature Reaction ◽  
Deposition Method ◽  
Wet Impregnation ◽  
High Temperature Reaction

Positive environmental and technological contexts make dry methane reforming (DMR) an extensively studied reaction. During this process two main greenhouse gases CH4and CO2can be simultaneously converted into syngas – a mixture of CO and H2. Supported-nickel is one of the most frequently applied DMR catalysts. Their activity depends mainly on Ni concentration, kind of its precursor and a deposition method. As DMR is a demanding high-temperature reaction, it requires not only an active but first a very stable catalyst. Structural, textural and functional properties of such support remain thus of crucial efficiency. Main aim of this work was to elucidate how the synthesis of CeO2-ZrO2support obtained by supercritical fluid method (i.e.at temperature of 400°C under a pressure of 25 MPa), can influence the properties of Ni-based DMR catalysts. The supports of various compositions (CeO2content from 100 to 0 %), subsequently calcined at 800°C for 6h in air have been analyzed. Nickel was deposited from nitrate(V) precursor via classical wet impregnation. The final catalysts have been characterized structurally (XRD, RS), texturally (BET, SEM) and functionally (UV/Vis-DR, XPS). Catalytic tests in dry methane reforming reaction have been performed to determine activity and stability of the synthesized samples.

Dry Reforming of Methane for Syngas Production Over Well-Dispersed Mesoporous NiCe0.5Zr0.5O3 with Ni Nanoparticles Immobilized

2016 ◽  
Vol 146 (9) ◽  
pp. 1663-1673 ◽  
Author(s):  
Weijian Yuan ◽  
Yuqi Wang ◽  
Yongqiang Zou ◽  
Wei Tan ◽  
Wenqing Hou ◽  
...  
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Ni Nanoparticles ◽  
Syngas Production
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