Alkane Carbonylation with Carbon Monoxide on Sulfated Zirconia: NMR Observation of Ketone and Carboxylic Acid Formation from Isobutane and CO

2000 ◽  
Vol 39 (20) ◽  
pp. 3658-3660 ◽  
Author(s):  
Alexander G. Stepanov ◽  
Mikhail V. Luzgin ◽  
Alexey V. Krasnoslobodtsev ◽  
Vera P. Shmachkova ◽  
Nina S. Kotsarenko
Keyword(s):  
Carbon Monoxide ◽  
Carboxylic Acid ◽  
Sulfated Zirconia ◽  
Acid Formation

Alkane Carbonylation with Carbon Monoxide on Sulfated Zirconia: NMR Observation of Ketone and Carboxylic Acid Formation from Isobutane and CO

2000 ◽  
Vol 112 (20) ◽  
pp. 3804-3806 ◽  
Author(s):  
Alexander G. Stepanov ◽  
Mikhail V. Luzgin ◽  
Alexey V. Krasnoslobodtsev ◽  
Vera P. Shmachkova ◽  
Nina S. Kotsarenko
Keyword(s):  
Carbon Monoxide ◽  
Carboxylic Acid ◽  
Sulfated Zirconia ◽  
Acid Formation

scholarly journals Carboxylic acid formation by hydroxyl insertion into acyl moieties on late transition metals

2017 ◽  
Vol 7 (22) ◽  
pp. 5365-5375 ◽  
Author(s):  
Benjamin W. J. Chen ◽  
Alexander Genest ◽  
Adrian Hühn ◽  
Notker Rösch
Keyword(s):  
Carboxylic Acid ◽  
Transition Metals ◽  
Acid Formation ◽  
Late Transition Metals ◽  
Late Transition ◽  
Catalytic Decarboxylation

With a DFT approach, we systematically examined the barriers for OH insertion into acyl moieties on late transition metals, a reaction pertinent to the catalytic decarboxylation of biomass.

scholarly journals Ozone-driven photochemical formation of carboxylic acid groups from alkane groups

2011 ◽  
Vol 11 (3) ◽  
pp. 7189-7233 ◽  
Author(s):  
S. Liu ◽  
D. A. Day ◽  
J. E. Shields ◽  
L. M. Russell
Keyword(s):  
Carboxylic Acid ◽  
Gas Phase ◽  
Formation Mechanism ◽  
Coastal Region ◽  
Chemical Properties ◽  
Acid Group ◽  
Acid Formation ◽  
Oh Radicals ◽  
Diurnal Cycles ◽  
Carboxylic Acid Groups

Abstract. Carboxylic acids are ubiquitous in atmospheric particles, and they play an important role in the physical and chemical properties of aerosol particles. During measurements in coastal California in the summer of 2009, carboxylic acid functional groups were highly associated with trajectories from an industrial region with high organic mass (OM), likely from fossil fuel combustion emissions. The concentration of carboxylic acid groups peaked during daytime, suggesting a photochemical secondary formation mechanism. This daytime increase in concentration was tightly correlated with O3 mixing ratio, indicating O3 was the likely driver in acid formation. Based on the diurnal cycles of carboxylic acid and alkane groups, the covariation of carboxylic acid groups with O3, and the composition of the Combustion factor resulted from the factor analyses, gas-phase alkane oxidation by OH radicals to form dihyfrofuran followed by further oxidation of dihydrofuran by O3 is the likely acid formation mechanism. Using the multi-day average of the daytime increase of carboxylic acid group concentrations and m/z 44-based Aged Combustion factor, we estimated the lower-bound contributions of secondary organic aerosol (SOA) formed in 12-h daytime of processing in a single day to be 30% of the carboxylic acid groups and 25–45% of the Combustion factor concentration. These unique ambient observations of photochemically-driven acid formation suggest that gas-phase alkanes might be important sources of SOA formation in this coastal region.

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