Catalytic oxidation of NO over Mn–Co–Ce–Ox catalysts: effect of reaction conditions

Supported 3wt%Pd/α-Al₂O₃ catalyst was tested in selective oxidation of 1,2-propanediol by molecular oxygen. It was found that the catalyst is active in an alkaline water solution. Lactic acid was obtained as the main product of the reaction. Influence of different reaction conditions on 1,2-PDO conversion and oxidation process selectivity was studied. Partial kinetic orders of the reaction with respect to 1,2-propanediol, c0(NaOH), p(O2), n(1,2-PDO)/n(Pd)) were determined and an experimental kinetic model of the catalytic oxidation reaction was obtained. Activation energy of the process was calculated and was found to be about 53 ± 5 kJ/mol.

Download Full-text

Synthesis of a Ruthenium Complex Based on 2,6-Bis[1-(Pyridin-2-yl)-1H-Benzo[d]Imidazol-2-yl]Pyridine and Catalytic Oxidation of (1H-Benzo[d]-Imidazol-2-yl)Methanol to 1H-Benzo[d]Imidazole-2-Carbaldehyde with H2O2

Journal of Chemical Research ◽

10.3184/174751917x14858862342106 ◽

2017 ◽

Vol 41 (2) ◽

pp. 88-92

Author(s):

Shenggui Liu ◽

Rongkai Pan ◽

Wenyi Su ◽

Guobi Li ◽

Chunlin Ni

Keyword(s):

Reaction Time ◽

Catalytic Oxidation ◽

Reaction Temperature ◽

Ruthenium Complex ◽

Reaction Conditions ◽

Molar Ratios ◽

Optimal Reaction

2,6-Bis[1-(pyridin-2-yl)-1H-benzo[d]-imidazol-2-yl]pyridine (bpbp), which has been synthesised by intramolecular thermocyclisation of N2,N6-bis[2-(pyridin-2-ylamino)phenyl]pyridine-2,6-dicarboxamide, reacts with sodium pyridine-2,6-dicarboxylate (pydic) and RuCl3 to give [Ru(bpbp)(pydic)] which can catalyse the oxidation of (1H-benzo[d]imidazol-2-yl)methanol to 1H-benzo[d]imidazole-2-carbaldehyde by H2O2. The optimal reaction conditions were: molar ratios of catalyst to substrate to H2O2 set at 1: 1000: 3000; reaction temperature 50 °C; reaction time 5 h. The yield of (1H-benzo[d]imidazol-2-yl) methanol was 70%.

Download Full-text

Catalytic Oxidation of NO on MnO2in the Presence of Ozone

Journal of Environmental Science International ◽

10.5322/jes.2009.18.4.445 ◽

2009 ◽

Vol 18 (4) ◽

pp. 445-450

Keyword(s):

Catalytic Oxidation ◽

Oxidation Of No

Download Full-text

ChemInform Abstract: Catalytic Oxidation of NO to NO2 Over a H-Mordenite Catalyst.

ChemInform ◽

10.1002/chin.199047025 ◽

1990 ◽

Vol 21 (47) ◽

Author(s):

J. G. M. BRANDIN ◽

L. H. ANDERSSON ◽

C. U. I. ODENBRAND

Keyword(s):

Catalytic Oxidation ◽

Oxidation Of No

Download Full-text

Simultaneous catalytic oxidation of NO and Hg0 over LaBO3 (B = Co, Mn, Ni, and Cu) perovskites

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2021.106612 ◽

2021 ◽

pp. 106612

Author(s):

Ran Ao ◽

Liping Ma ◽

Quxiu Dai ◽

Zhiying Guo ◽

Hongpan Liu ◽

...

Keyword(s):

Catalytic Oxidation ◽

Oxidation Of No

Download Full-text

Catalytic oxidation of NO on activated carbons

Energy Procedia ◽

10.1016/j.egypro.2019.01.285 ◽

2019 ◽

Vol 158 ◽

pp. 2366-2371 ◽

Cited By ~ 3

Author(s):

Zhongqiu Fang ◽

Xinhai Yu ◽

Shan-Tung Tu

Keyword(s):

Catalytic Oxidation ◽

Activated Carbons ◽

Oxidation Of No

Download Full-text

The inhibition effect and deactivation mechanism of H2O and SO2 on selective catalytic oxidation of NO over the Mn–Ca–Ox–(CO3)y catalyst

New Journal of Chemistry ◽

10.1039/c9nj03688a ◽

2019 ◽

Vol 43 (48) ◽

pp. 19279-19285 ◽

Cited By ~ 1

Author(s):

Chi Wang ◽

Ruiyuan Zhang ◽

Yishan Zhang ◽

Ping Ning ◽

Xin Song ◽

...

Keyword(s):

Particle Size ◽

Catalytic Oxidation ◽

No Oxidation ◽

Inhibition Effect ◽

Selective Catalytic Oxidation ◽

Oxidation Of No ◽

Deactivation Mechanism

H2O and SO2 had an inhibition effect on NO oxidation. SO2 increased the particle size of the catalyst. H2O decreased the particle size of the catalyst.

Download Full-text

Research into the reaction process and the effect of reaction conditions on the simultaneous removal of H2S, COS and CS2 at low temperature

RSC Advances ◽

10.1039/c7ra12086a ◽

2018 ◽

Vol 8 (13) ◽

pp. 6996-7004 ◽

Cited By ~ 12

Author(s):

Xin Sun ◽

Haotian Ruan ◽

Xin Song ◽

Lina Sun ◽

Kai Li ◽

...

Keyword(s):

Low Temperature ◽

Catalytic Oxidation ◽

Oxidation Reaction ◽

Reaction Process ◽

Hydrolysis Reaction ◽

Simultaneous Removal ◽

Catalytic Hydrolysis ◽

Reaction Conditions ◽

Removal Processes

The removal processes of COS, CS2 and H2S could be divided into two parts: a catalytic hydrolysis reaction and a catalytic oxidation reaction.

Download Full-text

Novel Effect of Zinc Nitrate/Vanadyl Oxalate for Selective Catalytic Oxidation of α-Hydroxy Esters to α-Keto Esters with Molecular Oxygen: An In Situ ATR-IR Study

Molecules ◽

10.3390/molecules24071281 ◽

2019 ◽

Vol 24 (7) ◽

pp. 1281 ◽

Cited By ~ 1

Author(s):

Yongwei Ju ◽

Zhongtian Du ◽

Chuhong Xiao ◽

Xingfei Li ◽

Shuang Li

Keyword(s):

Catalytic Activity ◽

Catalytic Oxidation ◽

Molecular Oxygen ◽

Aerobic Oxidation ◽

Value Added ◽

Attenuated Total Reflection ◽

Reaction Conditions ◽

Keto Esters ◽

Selective Catalytic Oxidation ◽

Hydroxy Esters

Selective oxidation of α-hydroxy esters is one of the most important methods to prepare high value-added α-keto esters. An efficient catalytic system consisting of Zn(NO3)2/VOC2O4 is reported for catalytic oxidation of α-hydroxy esters with molecular oxygen. Up to 99% conversion of methyl DL-mandelate or methyl lactate could be facilely obtained with high selectivity for its corresponding α-keto ester under mild reaction conditions. Zn(NO3)2 exhibited higher catalytic activity in combination with VOC2O4 compared with Fe(NO3)3 and different nitric oxidative gases were detected by situ attenuated total reflection infrared (ATR-IR) spectroscopy. UV-vis and ATR-IR results indicated that coordination complex formed in Zn(NO3)2 in CH3CN solution was quite different from Fe(NO3)3; it is proposed that the charge-transfer from Zn2+ to coordinated nitrate groups might account for the generation of different nitric oxidative gases. The XPS result indicate that nitric oxidative gas derived from the interaction of Zn(NO3)2 with VOC2O4 could be in favor of oxidizing VOC2O4 to generate active vanadium (V) species. It might account for different catalytic activity of Zn(NO3)2 or Fe(NO3)3 combined with VOC2O4. This work contributes to further development of efficient aerobic oxidation under mild reaction conditions.

Download Full-text