Selective Reduction of NO with Propene over Ga2O3–Al2O3: Effect of Sol–Gel Method on the Catalytic Performance

2000 ◽  
Vol 192 (1) ◽  
pp. 137-148 ◽  
Author(s):  
Masaaki Haneda ◽  
Yoshiaki Kintaichi ◽  
Hiromichi Shimada ◽  
Hideaki Hamada
Keyword(s):  
Sol Gel ◽  
Selective Reduction ◽  
Catalytic Performance ◽  
Reduction Of No ◽  
Gel Method ◽  
Sol Gel Method

scholarly journals The effects of calcination atmosphere on the catalytic performance of Ce-doped TiO2 catalysts for selective catalytic reduction of NO with NH3

RSC Advances ◽  
2017 ◽  
Vol 7 (38) ◽  
pp. 23348-23354 ◽  
Author(s):  
Yiqing Zeng ◽  
Shule Zhang ◽  
Yanan Wang ◽  
Guangli Liu ◽  
Qin Zhong
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Sol Gel ◽  
Catalytic Performance ◽  
Reduction Of No ◽  
Gel Method ◽  
Doped Tio2 ◽  
Sol Gel Method ◽  
Calcination Atmosphere

A series of well-reported Cex–Ti catalysts with a low content of Ce species were synthesized by a sol–gel method.

scholarly journals A Simulation Study of Effect of Mn-Ce/γ-Al2O3on NOxStorage and Reduction over Pt-Ce-Ba/γ-Al2O3Catalysts

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
Lili Lei ◽  
Chuan Sun ◽  
Bo Zhang ◽  
Wenye Gu
Keyword(s):  
Simulation Study ◽  
Sol Gel ◽  
Reduction Reaction ◽  
No Oxidation ◽  
Reduction Of No ◽  
Gel Method ◽  
Sol Gel Method

A series of Pt-Ce-Ba/γ-Al2O3and Mn-Ce/γ-Al2O3catalysts were synthesized by a sol-gel method and the samples were characterized by XRD, SEM, and EDS. The effect of Mn-Ce/γ-Al2O3on the storage and reduction of NOxover Pt-Ce-Ba/γ-Al2O3catalysts was studied in a fix-bed reactor with simulation gases NO, O2, and N2. The results indicated that NO oxidation to NO2was reduced with the increase of inlet NO concentration, which was up to 83% when the concentration of NO was 500 ppm but reduced to 76% with the concentration of NO increasing to 1000 ppm. Comparing with the Pt-Ce-Ba/γ-Al2O3catalysts, the rate of NOxstorage and reduction was remarkably increased over Pt-Ce-Ba/γ-Al2O3combined with Mn-Ce/γ-Al2O3catalysts. However, the reductant used for NOxreduction reaction over Pt-Ce-Ba/γ-Al2O3catalysts was consumed under the treatment of Mn-Ce/γ-Al2O3catalyst, which caused the NOxconversion to obviously drop, but the rate of NOxabsorption declined slightly.

Selective catalytic reduction of NO x by CO over LaMnO3 nano perovskites prepared by microwave and ultrasound assisted sol–gel method

2018 ◽  
Vol 85 (3) ◽  
pp. 647-656 ◽  
Author(s):  
Seyed Ali Hosseini ◽  
Behrouz Mehri ◽  
Aligholi Niaei ◽  
Behrang Izadkhah ◽  
Consuelo Alvarez-Galvan ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Sol Gel ◽  
Reduction Of No ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ultrasound Assisted

scholarly journals Mixed Metal Oxides of M1 MoVNbTeOx and TiO2 as Composite Catalyst for Oxidative Dehydrogenation of Ethane

Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 71
Author(s):  
Yuxin Chen ◽  
Dan Dang ◽  
Binhang Yan ◽  
Yi Cheng
Keyword(s):  
Metal Oxides ◽  
Oxidative Dehydrogenation ◽  
Sol Gel ◽  
Catalytic Performance ◽  
Mixed Metal Oxides ◽  
Gel Method ◽  
Mixed Metal ◽  
Sol Gel Method ◽  
Composite Catalysts ◽  
Oxidative Dehydrogenation Of Ethane

Composite catalysts of mixed metal oxides were prepared by mixing a phase-pure M1 MoVNbTeOx with anatase-phase TiO2. Two methods were used to prepare the composite catalysts (the simple physically mixed or sol-gel method) for the improvement of the catalytic performance in the oxidative dehydrogenation of ethane (ODHE) process. The results showed that TiO2 particles with a smaller particle size were well dispersed on the M1 surface for the sol-gel method, which presented an excellent activity for ODHE. At the same operating condition (i.e., the contact time of 7.55 gcat·h/molC2H6 and the reaction temperature of 400 °C), the M1-TiO2-SM and M1-TiO2-PM achieved the space time yields of 0.67 and 0.52 kgC2H4/kgcat/h, respectively, which were about ~76% and ~35% more than that of M1 catalyst (0.38 kgC2H4/kgcat/h), respectively. The BET, ICP, XRD, TEM, SEM, H2-TPR, C2H6-TPSR, and XPS techniques were applied to characterize the catalysts. It was noted that the introduction of TiO2 raised the V5+ abundance on the catalyst surface as well as the reactivity of active oxygen species, which made contribution to the promotion of the catalytic performance. The surface morphology and crystal structure of used catalysts of either M1-TiO2-SM or M1-TiO2-PM remained stable as each fresh catalyst after 24 h time-on-stream tests.

Graphene/nickel aerogel: an effective catalyst for the thermal decomposition of ammonium perchlorate

RSC Advances ◽  
2016 ◽  
Vol 6 (85) ◽  
pp. 82112-82117 ◽  
Author(s):  
Yuanfei Lan ◽  
Bixin Jin ◽  
Jingke Deng ◽  
Yunjun Luo
Keyword(s):  
Thermal Decomposition ◽  
Ammonium Perchlorate ◽  
Sol Gel ◽  
Catalytic Performance ◽  
Gel Method ◽  
Sol Gel Method ◽  
Effective Catalyst

G/Ni aerogels were prepared by a sol–gel method and supercritical CO2 drying. They exhibit a remarkable catalytic performance for the thermal decomposition of AP.

Catalytic performance of NO oxidation over LaMeO3 (Me = Mn, Fe, Co) perovskite prepared by the sol–gel method

2013 ◽  
Vol 37 ◽  
pp. 105-108 ◽  
Author(s):  
Jiahao Chen ◽  
Meiqing Shen ◽  
Xinquan Wang ◽  
Jun Wang ◽  
Yugeng Su ◽  
...  
Keyword(s):  
Sol Gel ◽  
Catalytic Performance ◽  
No Oxidation ◽  
Gel Method ◽  
Sol Gel Method

A highly active Pd/H-ZSM-5 catalyst in lean methane combustion prepared via a sol–gel method and treated by reduction–oxidation

2020 ◽  
Vol 44 (10) ◽  
pp. 3940-3949 ◽  
Author(s):  
Chao Fan ◽  
Li Yang ◽  
Li Luo ◽  
Zhiwei Wu ◽  
Zhangfeng Qin ◽  
...  
Keyword(s):  
Sol Gel ◽  
Methane Combustion ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Oxidation Treatment ◽  
Gel Method ◽  
Sol Gel Method ◽  
Highly Active ◽  
Metal Support ◽  
Metal Support Interactions

The reduction–oxidation treatment can reconstruct Pd nanoparticles, strengthen metal–support interactions and enhance catalytic performance of Pd/H-ZSM-5 in methane combustion.

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