Active sites of NO selective catalytic reduction over V2O5–WO3/TiO2

文献情報

出版日 2023-10-26

DOI 10.1039/D3TA05525F

インパクトファクター 12.732

著者

Dongrun Xu, Weiye Qu, Junhong Liu, Junxiao Chen, Xue Fang, Liwei Chen, Xi Liu, Yaxin Chen

原文を見る

要旨

Selective catalytic reduction (SCR) is the most effective technology to control NO emission using commercial V2O5–WO3/TiO2 catalysts, but the nature of active catalytic sites remains under debate. Here we provide evidence demonstrating that dinuclear vanadium–tungsten sites are the most active catalytic sites of conventional V2O5–WO3/TiO2 catalysts, inconsistent with a prevailing view that dimeric vanadium sites are the active sites. The dinuclear vanadium–tungsten sites have inherently stronger acidity than the dimeric vanadium sites, favoring NH3 adsorption. Meanwhile, the vanadium 3d electrons of the dinuclear vanadium–tungsten sites are richer than those of the dimeric vanadium sites, facilitating O2 activation in SCR. Hence, the dinuclear vanadium–tungsten sites have higher SCR activity than the dimeric vanadium sites under identical reaction conditions. This work settles a long dispute on the identification of active sites of conventional V2O5–WO3/TiO2 SCR catalysts, thus having implications for a unified explanation of disparate SCR reaction mechanisms and rational design of improved SCR catalysts.

掲載誌

Journal of Materials Chemistry A

CiteScore: 19.5

自己引用率: 4.7%

年間論文数: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

Active sites of NO selective catalytic reduction over V2O5–WO3/TiO2

文献情報

おすすめジャーナル

関連文献

Pd(ii) immobilized on mesoporous silica by N-heterocyclic carbeneionic liquids and catalysis for hydrogenation‡

Understanding the concept of randomness in inelastic electron tunneling excitations

Orientation dependence for Br formation in the reaction of oriented OH radical with HBr molecule

Competitive reaction pathways of C2Cl3 + NO via four-membered ring and bicyclic ring intermediates

Contents

The role of aromatic interactions in the structure and energetics of benzyl ketones

Anharmonic overtone and combination states of glycine and two model peptides examined by vibrational self-consistent field theory

Photovoltage improvements and recombination suppression by montmorillonite addition to PEO gel electrolyte for dye-sensitized solar cells

Spectroscopic identification of carbon dioxide clusters: (CO2)6 to (CO2)13

Some fundamental properties and reactions of ice surfaces at low temperatures

こちらもおすすめ

2,3-スチオエポキシマドルを取り扱う際の実験室安全事項は何ですか？

6-氟-2-氨基苯酚の主な用途は何ですか？

BOC-S-3-アミニ-4-(4-メチオキシベンチル)-ブタン酸の代替品はありますか？

Methyl 2-(chloromethyl)-3-nitrobenzoate（1218910-61-2）の代替品はありますか？

（2R)-2-アミノ-N-ベンジル-3-ヒドロキシプロパナミドを含む廃棄物はどのように処理すべきですか？

6,7-二氢-咪唑並[1,2-a]ピリドイン-8(5h)-酮はどのように合成されますか？

エチル(3R)-3-ピロリジニル酢酸水和塩とは何ですか？

（2S）-{[(2-メチルエチルオキシ]カルボニル}アミノ)[2-(トリアフルオロメチルフェニル]エチカシック酸の物理化学的性質は何ですか？

2-ブロモ-1-(2-メチル-2-プロパニル)-4-ニトロベンゼンはどのように保存すればよいですか？

1-[(4-硝基フェニル)スルホニル]-1H-1,2,4-三唑の市場動向や研究トレンドはどうですか？

掲載誌

Journal of Materials Chemistry A

おすすめ化合物

6-(Benzyloxy)-8-(2-bromoacetyl)-2H-benzo[b][1,4]oxazin-3(4H)-one

4-Methyl-2-oxo-2H-chromen-7-yl 2-acetamido-2-deoxy-3-O-(6-deoxy-alpha-L-galactopyranosyl)-beta-D-glucopyranoside

Methyl 4-amino-5-bromo-2-methylbenzoate

(1H-Pyrazol-4-yl)boronic acid hydrochloride

Xanthosine; 5'-Triphosphate

おすすめサプライヤー