Enhanced formaldehyde oxidation on CeO 2 /AlOOH-supported Pt catalyst at room temperature

Yan, Zhaoxiong; Xu, Zhihua; Yu, Jiaguo; Jaroniec, Mietek

doi:10.1016/j.apcatb.2016.06.052

Cited by 144 publications

(78 citation statements)

References 59 publications

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“…The mechanism for HCHO oxidation varies with the types of catalysts . In general, the oxidation of HCHO over transition metal‐based catalysts follows the Mars‐van Krevelen mechanism . In this mechanism, the reaction proceeds in two stages: (a) gaseous oxygen molecules are adsorbed and dissociated on the surface of the catalyst to form surface adsorbed oxygen species; (b) active oxygen species react with HCHO in gaseous phase or adsorbed on the surface of the catalysts…”

Section: The Mechanism Of Formaldehyde Oxidation Over Manganese Oxidementioning

confidence: 99%

“…Various approaches were used to remove HCHO, such as adsorption, plasma technique, photocatalysis and thermal catalytic oxidation . The adsorption method is limited by the maximum adsorption capacity; plasma technique has problems of secondary pollution, high energy consumption, and high cost; photocatalysis is limited by the excitation light source .…”

Section: Introductionmentioning

confidence: 99%

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Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

2019

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Thermal catalytic oxidation is a promising and effective technique for the removal of harmful formaldehyde (HCHO) in indoor air. Manganese oxide is a mostly‐investigated non‐noble metal oxide catalyst and attracts much attention due to its better catalytic performance for formaldehyde oxidation at low temperature. In this review, the effect of manganese oxide crystal structure, surface morphology and microstructure, surface active oxygen species, reducibility as well as catalytic reaction conditions (temperature, relative humidity and HCHO initial concentration) on catalytic performance, and the catalytic mechanism over manganese oxide were summarized and discussed. The challenges and prospects for future development of manganese oxide in catalytic oxidation of formaldehyde are also covered.

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Section: The Mechanism Of Formaldehyde Oxidation Over Manganese Oxidementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

2019

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“…[16] Among these methods, the most promisingi st oc ompletely degrade formaldehyde into H 2 Oa nd CO 2 by thermal catalytic oxidation, because ah igher rate of removali sa chieved with al ower concentra-tion of secondary pollution by-products. [17][18][19][20][21][22] The efficiencyo f noble-metal-supported transition-metal oxides in the removal of formaldehyde at room temperature is considerable. [19,20,23,24] An umber of noble-metal-supported oxidesh ave been used to catalyze formaldehyde degradation,i ncluding Pt/TiO 2 , [25] Pt/ Fe 2 O 3 , [26] Pt/MnO 2 , [27] Pt/MnO x -CeO 2 , [28] Pd-Mn/Al 2 O 3 , [29] Au/ TiO 2 , [30] Ag/CeO 2 , [31] and Ag/Co 3 O 4 .…”

Section: Introductionmentioning

confidence: 99%

Platinum‐Supported Zirconia Nanotube Arrays Supported on Graphene Aerogels Modified with Metal–Organic Frameworks: Adsorption and Oxidation of Formaldehyde at Room Temperature

Tan

Chen

et al. 2019

Chemistry A European J

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Precious-metal catalysts (e.g.,A u, Rh, Ag, Ru, Pt, and Pd)s upported on transition-metal oxides (e.g.,A l 2 O 3 , Fe 2 O 3 ,CeO 2 ,ZrO 2 ,Co 3 O 4 ,MnO 2 ,T iO 2 ,and NiO) can effectively oxidize volatile organic compounds. In this study,p orous platinum-supported zirconia materials have been prepared by a" surface-casting" method.T he synthesized catalysts presenta no rdered nanotube structure and exhibited excellent performance toward the catalytic oxidation of formaldehyde. Af acile method, utilizing ab oilingw ater bath, was used to fabricate graphene aerogel (GA), and the macroscopic 3D Pt/ZrO 2 -GA was modified by introducing an adjustable MOF coating by as urfaces tep-by-stepm ethod.T he unblocked mesoporous structure of the graphene aerogel facilitates the ingress and egress of reactants and product molecules. The selected 7wt.% Pt/ZrO 2 -GA-MOF-5 composite demonstrated excellent performance for HCHO adsorption. Additionally,t his catalysta chieved around 90 %c onversion when subjectedto ar eaction temperature of 70 8C (T 90 % = 70 8C). The Pt/ZrO 2 -GA-MOF-5c omposite induces a catalytic cycle, increasing the conversion by simultaneously adsorbing and oxidizing HCHO. Thisw ork providesasimple approacht oi ncreasing reactantc oncentration on the catalyst to increase the rate of reaction.

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“…Among all the investigated processes, catalytic oxidation is regarded as one of the most efficient methods for HCHO removal [3,4]. So far, supported noble metal catalysts show superior HCHO catalytic activity at room temperature [5][6][7]. Choosing suitable supports is important for the catalytic oxidation process of HCHO.…”

Section: Introductionmentioning

confidence: 99%

Acid-Alkali-Treated Natural Mordenite-Supported Platinum Nanoparticles (Pt/MORn-H-OH) for Efficient Catalytic Oxidation of Formaldehyde at Room Temperature

Gao

Guo

Zhou

et al. 2019

Journal of Chemistry

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In this work, a series of natural mordenite-supported platinum (Pt) catalysts were prepared by a facile two-step method, namely, treatment of natural mordenite and then the loading of Pt nanoparticles. The acid-alkali-treated natural mordenite-supported Pt samples (1% Pt/MORn-H-OH) exhibited the highly enhanced catalytic oxidation activity of formaldehyde (HCHO) at room temperature. XRD results showed that the crystalline phase of the mordenite did not change significantly in 1% Pt/MORn-H-OH catalyst. However, the acid-alkali treatment endowed the Pt particles excellent dispersion with the smallest diameter of 2.8 nm in a high loading content, which contributed to the optimal catalytic activity of 1% Pt/MORn-H-OH.

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Enhanced formaldehyde oxidation on CeO 2 /AlOOH-supported Pt catalyst at room temperature

Cited by 144 publications

References 59 publications

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides

Platinum‐Supported Zirconia Nanotube Arrays Supported on Graphene Aerogels Modified with Metal–Organic Frameworks: Adsorption and Oxidation of Formaldehyde at Room Temperature

Acid-Alkali-Treated Natural Mordenite-Supported Platinum Nanoparticles (Pt/MORn-H-OH) for Efficient Catalytic Oxidation of Formaldehyde at Room Temperature

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