Vacuum Thermal Treated Ni-CeO2/SBA-15 Catalyst for CO2 Methanation

Wang, Luhui; Liu, Hui; Ye, Han; Hu, Rong; Yang, Shuqing; Tang, Guoli; Li, Kunqiang; Yang, Yongrong

doi:10.3390/nano8100759

Cited by 18 publications

(11 citation statements)

References 36 publications

(40 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 1 shows the powder XRD patterns of the fresh and reduced catalysts. For the fresh Ni-La 2 O 3 /SiO 2 , the peaks at 2θ = 37.2 • , 43.3 • , and 62.9 • are attributed to NiO [44,45]. The reduced Ni-La 2 O 3 /SiO 2 showed weak Ni peaks at 44.5 • and 51.7 • [44,45].…”

Section: Characterization Of Fresh and Reduced Catalystsmentioning

confidence: 97%

See 1 more Smart Citation

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

Wang

Liu

et al. 2019

Catalysts

Self Cite

View full text Add to dashboard Cite

Ni nanoparticles encapsulated within La 2 O 3 porous system (Ni@La 2 O 3 ), the latter supported on SiO 2 (Ni@La 2 O 3 )/SiO 2 ), effectively inhibit carbon deposition for the dry reforming of methane. In this study, Ni@La 2 O 3 /SiO 2 catalyst was prepared using a one-pot colloidal solution combustion method. Catalyst characterization demonstrates that the amorphous La 2 O 3 layer was coated on SiO 2 , and small Ni nanoparticles were encapsulated within the layer of amorphous La 2 O 3 . During 50 h of dry reforming of methane at 700 • C and using a weight hourly space velocity (WHSV) of 120,000 mL g cat −1 h −1 , the CH 4 conversion obtained was maintained at 80%, which is near the equilibrium value, while that of impregnated Ni-La 2 O 3 /SiO 2 catalyst decreased from 63% to 49%. The Ni@La 2 O 3 /SiO 2 catalyst exhibited very good resistance to carbon deposition, and only 1.6 wt% carbon was formed on the Ni@La 2 O 3 /SiO 2 catalyst after 50 h of reaction, far lower than that of 11.5 wt% deposited on the Ni-La 2 O 3 /SiO 2 catalyst. This was mainly attributed to the encapsulated Ni nanoparticles in the amorphous La 2 O 3 layer. In addition, after reaction at 700 • C for 80 h with a high WHSV of 600,000 mL g cat −1 h −1 , the Ni@La 2 O 3 /SiO 2 catalyst exhibited high CH 4 conversion rate, ca. 10.10 mmol g Ni −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.

show abstract

Section: Characterization Of Fresh and Reduced Catalystsmentioning

confidence: 97%

“…The Ni-La2O3/SiO2 catalyst exhibits two reduction peaks. The first peak at 340 °C corresponds to the reduction of free NiO [21,39,45]. The second peak at 385 °C corresponds to the reduction of NiO with weak interaction with La2O3 or SiO2 [40,42,46,47].…”

Section: Characterization Of Fresh and Reduced Catalystsmentioning

confidence: 99%

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

Wang

Liu

et al. 2019

Catalysts

Self Cite

View full text Add to dashboard Cite

show abstract

“…H 2 -temperature programmed reduction (H 2 -TPR) was performed on a TP-5080 multifunctional adsorption apparatus (Xianquan, Tianjin, China). A detailed description of the H 2 -TPR experiment can be found in our previous publication [33]. H 2 -temperature programmed desorption (H 2 -TPD) was performed on the same apparatus as H 2 -TPR.…”

Section: Characterization Of Catalystsmentioning

confidence: 99%

Highly Loaded Mesoporous Ni–La2O3 Catalyst Prepared by Colloidal Solution Combustion Method for CO2 Methanation

et al. 2019

Self Cite

View full text Add to dashboard Cite

Highly dispersed Ni-based catalysts for CO2 methanation have been extensively studied over the last decade. However, a highly loaded Ni-based catalyst always results in a large Ni particle size and poor CO2 methanation activity. In this work, a colloidal solution combustion method was used to prepare a highly loaded Ni–La2O3 catalyst (50 wt % Ni) with a small Ni particle size and abundant metal–support interface. The characterizations demonstrated that a Ni–La2O3 catalyst prepared in this way has a mesoporous structure and a small Ni particle size. Due to the small Ni particle size and abundant metal–support interface, the highly loaded mesoporous Ni–La2O3 catalyst exhibits higher activity and selectivity in CO2 methanation compared to the Ni–La2O3 catalyst prepared by a conventional solution combustion method.

show abstract

“…In CO2 methanation reaction, the Ni-CeO2/SBA-15-V catalyst was more active and selective than the Ni-CeO2/SBA-15-air catalyst. It was suggested that the good activity and selectivity of Ni-CeO2/SBA-15-V catalyst should be due to highly dispersed Ni in contact with small CeO2 particles [57]. The works indicated below describe nickelcontaining mono-, bi-and more-component catalysts for CO2 methanation with different bases and contents of metal components.…”

Section: Methanation Of Carbon Dioxidementioning

confidence: 99%

Heterogeneous Catalytic Hydrogenation of Carbon Dioxide Into Hydrocarbons: Achievements and Prospects

Tagiyeva¹,

Ismailov²

2020

Chemical Problems

View full text Add to dashboard Cite

The works published over the past 10 years on the catalytic hydrogenation of carbon dioxide into methane and C2+ hydrocarbons are considered. The choice of catalysts based on their elemental and phase composition, structural-porous characteristics, grain-size and acidic properties, the reaction mechanism and problems and prospects for the industrial application of heterogeneous catalytic conversion of CO2 to hydrocarbons are discussed.

show abstract

Vacuum Thermal Treated Ni-CeO2/SBA-15 Catalyst for CO2 Methanation

Cited by 18 publications

References 36 publications

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

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

Highly Loaded Mesoporous Ni–La2O3 Catalyst Prepared by Colloidal Solution Combustion Method for CO2 Methanation

Heterogeneous Catalytic Hydrogenation of Carbon Dioxide Into Hydrocarbons: Achievements and Prospects

Contact Info

Product

Resources

About