The effect of zirconia additive on the activity and structure stability of V2O5/WO3-TiO2 ammonia SCR catalysts

Shi, Anju; Wang, Xinquan; Yu, Tie; Shen, Meiqing

doi:10.1016/j.apcatb.2011.05.040

Cited by 104 publications

(51 citation statements)

References 56 publications

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“…However, the A values of the catalysts with Co/Cr of 3 are at least 6 times higher than the others. High A value also benefits for the enhancement of the activity test, [49] and in this test, the catalysts with Co/Cr of 3 show much higher than the other catalysts when compared to the difference among the Ea values. Hence, the catalysts which possess higher Ea values show higher catalytic performance.…”

Section: No Oxidation Activitymentioning

confidence: 93%

Effect of the introduction of Co and Ce‐doping on NO oxidation over Cr‐based composite oxides

Cao

Cai

2016

Asia-Pacific J Chem Eng

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NO oxidation reaction was studied over a series of Ce-Co-Cr-O catalysts with different Co/Cr and various Ce doped prepared by sol-gel method to evaluate the correlation of their structural with catalytic performance. These catalysts were investigated in detail by means of X-ray diffraction (XRD), Brunauer-Emmett-Teller surface area analysis (BET), high-resolution transmission electron microscope (HR-TEM), X-ray photoelectron spectroscopy (XPS), H 2 -temperatureprogrammed reduction (H 2 -TPR) and temperature-programmed desorption (TPD). The results demonstrate that the concentration of Co 3+ is the key factor that influences the activity, and high Ce-doped amount could well disperse the Co species. Hence Ce(3)-Co(3)-Cr(1) catalyst exhibits the higher activity for NO oxidation among all catalysts. The activation energy (Ea) are also calculated, and the results explain that the pre-exponential factor value is important when Ea are close.

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Section: No Oxidation Activitymentioning

confidence: 93%

Effect of the introduction of Co and Ce‐doping on NO oxidation over Cr‐based composite oxides

Cao

Cai

2016

Asia-Pacific J Chem Eng

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“…Acidity measurement was performed by temperature-programmed desorption with NH 3 , which is a base and widely used to determine acid sites, and the acidity of a catalyst has been reported to have a crucial effect on catalytic activity in SCR with NH 3 [18,19].…”

Section: What Is the Reason For The Dramatically Increased Reducibilimentioning

confidence: 99%

Surface phenomenon of CeO2-added V2O5/TiO2 catalyst based chemical vapor condensation (CVC) for enhanced selective catalytic reduction at low temperatures

Cha

Ehrman

Jurng

2016

Chemical Engineering Journal

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“…Recently, investigations into bimetallic catalysts such as Fe–Mn/TiO 2 [47,58], Mn–Ni/TiO 2 [127], Ce–W/TiO 2 [128], and ternary mixed-oxide catalysts such as Nb–Ce–W/TiO 2 [129] and Zr–V–W/TiO 2 [130] supported on TiO 2 have increased in popularity among scientists. These research studies imply that all these catalysts demonstrate high catalytic activities.…”

Section: Reviewmentioning

confidence: 99%

“…In addition, the remarkable thermal stability of bimetallic and ternary catalysts has also been recognised. Shi et al [130] found that the aged Zr–V–W/TiO 2 catalyst is more active than the fresh catalyst at a reaction temperature of 150 to 400 °C, after undergoing thermal aging at 750 °C for 12 h. Lee et al [131] outlined the applications and synthesis of advanced metal oxide catalysts. They reported that the SCR activities and selectivity were greatly improved with the addition of cerium.…”

Section: Reviewmentioning

confidence: 99%

A review of carbon-based and non-carbon-based catalyst supports for the selective catalytic reduction of nitric oxide

Anthonysamy

Afandi

Khavarian

et al. 2018

Beilstein J. Nanotechnol.

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Various types of carbon-based and non-carbon-based catalyst supports for nitric oxide (NO) removal through selective catalytic reduction (SCR) with ammonia are examined in this review. A number of carbon-based materials, such as carbon nanotubes (CNTs), activated carbon (AC), and graphene (GR) and non-carbon-based materials, such as Zeolite Socony Mobil–5 (ZSM-5), TiO2, and Al2O3 supported materials, were identified as the most up-to-date and recently used catalysts for the removal of NO gas. The main focus of this review is the study of catalyst preparation methods, as this is highly correlated to the behaviour of NO removal. The general mechanisms involved in the system, the Langmuir–Hinshelwood or Eley–Riedeal mechanism, are also discussed. Characterisation analysis affecting the surface and chemical structure of the catalyst is also detailed in this work. Finally, a few major conclusions are drawn and future directions for work on the advancement of the SCR-NH3 catalyst are suggested.

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The effect of zirconia additive on the activity and structure stability of V2O5/WO3-TiO2 ammonia SCR catalysts

Cited by 104 publications

References 56 publications

Effect of the introduction of Co and Ce‐doping on NO oxidation over Cr‐based composite oxides

Effect of the introduction of Co and Ce‐doping on NO oxidation over Cr‐based composite oxides

Surface phenomenon of CeO2-added V2O5/TiO2 catalyst based chemical vapor condensation (CVC) for enhanced selective catalytic reduction at low temperatures

A review of carbon-based and non-carbon-based catalyst supports for the selective catalytic reduction of nitric oxide

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