Complete Oxidation of CO, Ethanol, and Ethyl Acetate over Copper Oxide Supported on Titania and Ceria Modified Titania

1998 ◽  
Vol 179 (1) ◽  
pp. 72-89 ◽  
Author(s):  
Per-Olof Larsson ◽  
Arne Andersson
Keyword(s):  
Copper Oxide ◽  
Ethyl Acetate ◽  
Complete Oxidation ◽  
Oxidation Of Co

scholarly journals Catalytic Elimination of Carbon Monoxide, Ethyl Acetate, and Toluene over the Ni/OMS-2 Catalysts

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 581
Author(s):  
Ning Dong ◽  
Mengyue Chen ◽  
Qing Ye ◽  
Dan Zhang ◽  
Hongxing Dai
Keyword(s):  
Ethyl Acetate ◽  
Molecular Sieve ◽  
Space Velocity ◽  
Oxidation Of Co ◽  
Toluene Oxidation ◽  
Catalytic Activities ◽  
Catalytic Mechanisms ◽  
Ni Species ◽  
Synthesized Materials ◽  
Incorporation Method

The Ni-loaded cryptomelane-type manganese oxide octahedral molecular sieve (OMS-2) catalysts (xNi/OMS-2: x = 1, 3, 5, and 10 wt%) were prepared by a pre-incorporation method. Physicochemical properties of the as-synthesized materials were characterized by means of various techniques, and their catalytic activities for CO, ethyl acetate, and toluene oxidation were evaluated.The loading of Ni played an important role in improving physicochemical propertiesof OMS-2. Among all of the samples, 5Ni/OMS-2 exhibited the best catalytic activity, with the T90 being 155 °C for CO oxidation at a space velocity (SV) of 60,000 mL/(g·h), 225°C for ethyl acetate oxidation at an SV of 240,000 mL/(g·h), and 300 °C for toluene oxidation at an SV of 240,000 mL/(g·h), which was due to its high Mn3+ content and Oads concentration, good low-temperature reducibility and lattice oxygen mobility, and strong interaction between the Ni species and the OMS-2 support. In addition, catalytic mechanisms of the oxidation of three pollutants over 5Ni/OMS-2 were also studied. The oxidation of CO, ethyl acetate, and toluene over the catalysts took place first via the activated adsorption, then intermediates formation, and finally complete conversion of the formed intermediates to CO2 and H2O.

Enhanced catalytic performance of Cu- and/or Mn-loaded Fe-Sep catalysts for the oxidation of CO and ethyl acetate

2017 ◽  
Vol 25 (10) ◽  
pp. 1427-1434 ◽  
Author(s):  
Lisha Liu ◽  
Yong Song ◽  
Zhidan Fu ◽  
Qing Ye ◽  
Shuiyuan Cheng ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Catalytic Performance ◽  
Oxidation Of Co

SUPPORT EFFECT ON THE COMPLETE OXIDATION OF ETHYL ACETATE OVER Pt CATALYSTS

2011 ◽  
Vol 04 (04) ◽  
pp. 411-414 ◽  
Author(s):  
KEISUKE YASUDA ◽  
TOSHIYUKI MASUI ◽  
NOBUHITO IMANAKA
Keyword(s):  
Ethyl Acetate ◽  
Low Temperatures ◽  
Support Effect ◽  
Impregnation Method ◽  
Complete Oxidation ◽  
Pt Catalysts ◽  
Acetate Oxidation ◽  
Oxidation Activity ◽  
Wet Impregnation ◽  
Wet Impregnation Method

Complete oxidation of ethyl acetate over Pt / CeO 2– ZrO 2– Bi 2 O 3 catalysts prepared by a wet impregnation method was investigated. The Pt / CeO 2– ZrO 2– Bi 2 O 3 catalysts completely oxidized ethyl acetate into CO 2 and H 2 O at low temperatures without the formation of byproducts such as ethanol and acetaldehyde. The ethyl acetate oxidation activity correlates with the reducibility of the support such that a high reducibility gives high activity. By optimization of the composition and the Pt amount, complete oxidation of ethyl acetate was realized at a temperature as low as 190°C on a 10 wt.% Pt / Ce 0.63 Zr 0.17 Bi 0.20 O 1.90 catalyst.

scholarly journals Role of Hydroxyl Groups in the Preferential Oxidation of CO over Copper Oxide–Cerium Oxide Catalysts

ACS Catalysis ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 1723-1731 ◽  
Author(s):  
Arantxa Davó-Quiñonero ◽  
Miriam Navlani-García ◽  
Dolores Lozano-Castelló ◽  
Agustín Bueno-López ◽  
James A. Anderson
Keyword(s):  
Copper Oxide ◽  
Cerium Oxide ◽  
Oxide Catalysts ◽  
Hydroxyl Groups ◽  
Preferential Oxidation ◽  
Oxidation Of Co ◽  
Preferential Oxidation Of Co

Effect of Co and Ce on silica supported manganese catalysts in the reactions of complete oxidation of n-hexane and ethyl acetate

2011 ◽  
Vol 46 (22) ◽  
pp. 7152-7159 ◽  
Author(s):  
S. Todorova ◽  
A. Naydenov ◽  
H. Kolev ◽  
K. Tenchev ◽  
G. Ivanov ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Complete Oxidation ◽  
Manganese Catalysts

Catalytic oxidation of CO, hydrocarbons, and ethyl acetate over perovskite-type complex oxides

1994 ◽  
Vol 43 (4) ◽  
pp. 551-554 ◽  
Author(s):  
G. N. Pirogova ◽  
R. I. Korosteleva ◽  
N. M. Panich ◽  
T. A. Lagutina ◽  
Yu. V. Voronin
Keyword(s):  
Ethyl Acetate ◽  
Catalytic Oxidation ◽  
Complex Oxides ◽  
Oxidation Of Co ◽  
Type Complex ◽  
Catalytic Oxidation Of Co ◽  
Perovskite Type

Mesoporous Chromia with Ordered Three-Dimensional Structures for the Complete Oxidation of Toluene and Ethyl Acetate

2009 ◽  
Vol 43 (21) ◽  
pp. 8355-8360 ◽  
Author(s):  
Yunsheng Xia ◽  
Hongxing Dai ◽  
Haiyan Jiang ◽  
Jiguang Deng ◽  
Hong He ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Three Dimensional ◽  
Complete Oxidation

scholarly journals Enhanced Performance of the OMS-2-Supported CuOx Catalysts for Carbon Monoxide, Ethyl Acetate, and Toluene Oxidation

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 713
Author(s):  
Zhidan Fu ◽  
Mengyue Chen ◽  
Qing Ye ◽  
Ning Dong ◽  
Hongxing Dai
Keyword(s):  
Ethyl Acetate ◽  
Active Oxygen Species ◽  
Oxygen Mobility ◽  
Oxidation Of Co ◽  
Toluene Oxidation ◽  
In Situ Drifts ◽  
Redox Couples ◽  
Ft Ir ◽  
Incorporation Method

Different Cu contents (x wt%) were supported on the cryptomelane-type manganese oxide octahedral molecular sieve (OMS-2) (xCu/OMS-2; x = 1, 5, 15, and 20) via a pre-incorporation method. Physicochemical properties of the OMS-2 and xCu/OMS-2 samples were characterized by means of the XRD, FT-IR, SEM, TG/DTG, ICP-OES, XPS, O2-TPD, H2-TPR, and in situ DRIFTS techniques, and their catalytic activities were measured for the oxidation of CO, ethyl acetate, and toluene. The results show that the Cu species were homogeneously dispersed in the tunnel and framework structure of OMS-2. Among all of the samples, 15Cu/OMS-2 sample exhibited the best activities with the T50% of 65, 165, and 240 °C as well as the T90% of 85, 215, and 290 °C for CO, ethyl acetate and toluene oxidation, respectively, which was due to the existence of the Cu species and Mn3+/Mn4+ redox couples, rich oxygen vacancies, good oxygen mobility, low-temperature reducibility, and strong interaction between the Cu species and the OMS-2 support. The reaction mechanisms were also deduced by analyzing the in situ DRIFTS spectra of the 15Cu/OMS-2 sample. The excellent oxygen mobility associated with the electron transfer between Cu species and Mn3+/Mn4+ redox couples might be conducive to the continuous replenishment of active oxygen species and the constantly generated reactant intermediates, thereby increasing the reactant reaction rate.

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