A pronounced catalytic activity of heteropoly compounds supported on dealuminated USY for liquid-phase esterification of acetic acid with n-butanol

Wet oxidation tests were performed on two pure compound streams: acetic acid and ammonia; and on two wastewater streams: acrylic acid wastewater and sulphide laden spent caustic. Test results showed that Mn/Ce and Pt/TiO2 were effective catalysts that greatly enhanced acetic acid, ammonia and acrylic acid wastewater destruction. However, the Mn/Ce catalyst performance appears to be inhibited by concentrated salts dissolved in solution. This could limit the applicability of this catalyst for the treatment of brackish wastewaters. Zr, Ce and Ce nanoparticles were also shown to exhibit some catalytic activity, however not to the extent of the Mn/Ce and the Pt/TiO2.

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Liquid Phase Acylation of Alcohols with Acetic Acid Over Zeolites

Synthetic Communications ◽

10.1080/00397910008087237 ◽

2000 ◽

Vol 30 (11) ◽

pp. 1887-1893 ◽

Cited By ~ 11

Author(s):

N. Narender ◽

P. Srinivasu ◽

S. J. Kulkarni ◽

K. V. Raghavan

Keyword(s):

Acetic Acid ◽

Liquid Phase

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ChemInform Abstract: Liquid Phase Acylation of Alcohols with Acetic Acid over Zeolites.

ChemInform ◽

10.1002/chin.200034070 ◽

2010 ◽

Vol 31 (34) ◽

pp. no-no

Author(s):

N. Narender ◽

P. Srinivasu ◽

S. J. Kulkarni ◽

K. V. Raghavan

Keyword(s):

Acetic Acid ◽

Liquid Phase

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Liquid-Phase Hydrogenation to 2, 4-Tolylenediamine over Supported HY Catalysts

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.2381 ◽

2012 ◽

Vol 512-515 ◽

pp. 2381-2385

Author(s):

Xue Mei Zhang ◽

Feng Xing Niu

Keyword(s):

Catalytic Activity ◽

Liquid Phase ◽

Catalytic Hydrogenation ◽

Active Component ◽

Experimental Results ◽

Mass Ratio ◽

Liquid Phase Hydrogenation ◽

Catalytic Test

We have successfully prepared a novel passivation Ni/HY catalyst by the technologies of macerate-precipitatio.The catalysts are comprised of two contents: HY as carrier, Ni as active component，and we put it into the process of preparating aromatic amines.The nature of the catalysts was discussed based on the characterization results of BET , IR , SEM , XRD , TEM ,TPD , XPS and TPR . The catalytic hydrogenation technology for 2,4-dinitrobenzene in liquid phase can be an attractive and elegant routine for production of 2,4-tolylenediamine. The catalytic activity is evaluated at 2.2 MPa, 90 °C, 750r/min, solvent with reaction materials mass ratio of 60, catalyst with reaction materials mass ratio of 0.1. In the catalytic test, The experimental results over the catalyst showed that 2,4-dinitrobenzene and 2,4-tolylenediamine conversion and selective of 99.88% and 99.16% were obtained respectively.It is found that the catalyst is highly dispersion, stable, and reusable. No obvious deactivation of the catalyst was observed after repeated using twelve times.

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Kinetics and mechanism of meso-tetraphenylporphyriniron(III) chloride (TPP) catalysed oxidation of indole by sodium perborate

Polish Journal of Chemical Technology ◽

10.2478/pjct-2013-0031 ◽

2013 ◽

Vol 15 (2) ◽

pp. 107-111 ◽

Cited By ~ 6

Author(s):

D. Kungumathilagam ◽

K. Karunakaran

Keyword(s):

Acetic Acid ◽

Catalytic Activity ◽

Reaction System ◽

Kinetic Scheme ◽

Mechanistic Study ◽

Radical Mechanism ◽

Aqueous Acetic Acid ◽

Sodium Perborate ◽

Acetic Acid Medium ◽

Catalysed Oxidation

Developing catalyst is very significant for biologically important reactions which yield products, used as drugs. Mechanistic study on meso-tetraphenylporphyriniron(III) chloride (TPP) catalysed oxidation of indole by sodium perborate in aqueous acetic acid medium have been carried out. The reaction follows a fractional order with respect to substrate and catalyst. The order with respect to oxidant was found to be one. Increase in the percentage of acetic acid and increase in the concentration of [H+] decreased the rate. The reaction fails to initiate polymerization, and a radical mechanism is ruled out. Activation and thermodynamic parameters have been computed. A suitable kinetic scheme based on these observations has been proposed. Significant catalytic activity is observed for the reaction system in the presence of TPP.

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Mesoporous Polymeric Support Retaining High Catalytic Activity of Polyoxotungstate for Liquid-Phase Olefin Epoxidation using H2O2

ChemCatChem ◽

10.1002/cctc.201100045 ◽

2011 ◽

Vol 3 (9) ◽

pp. 1435-1438 ◽

Cited By ~ 28

Author(s):

Sanjeev P. Maradur ◽

Changbum Jo ◽

Dae-Heung Choi ◽

Kyeongyeon Kim ◽

Ryong Ryoo

Keyword(s):

Catalytic Activity ◽

Liquid Phase ◽

High Catalytic Activity ◽

Olefin Epoxidation ◽

Polymeric Support

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Synthesis, Characterization, and Crystal Structure of Several Novel Acidic Ionic Liquids: 1-ethyl-2-alkyl-benzimidazolium Tetra-Fluoroborate

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.457-458.139 ◽

2013 ◽

Vol 457-458 ◽

pp. 139-143 ◽

Cited By ~ 1

Author(s):

Ming Tian Wang ◽

Chang Ping Pan ◽

Wei Peng Gai ◽

Xiao Xia Lv ◽

Min Gang Zhai ◽

...

Keyword(s):

Crystal Structure ◽

Ionic Liquid ◽

Acetic Acid ◽

Catalytic Activity ◽

Lamellar Structure ◽

X Ray Diffraction ◽

X Ray ◽

Acidic Ionic Liquid ◽

Acidic Ionic Liquids ◽

Good Catalytic Activity

A series of novel acidic ionic liquid: 1-ethyl-2-alkyl-benzimidazolium tetra-fluoroborate (alkyl= Et, Pr-n, Bu-n) were prepared by simple acid-based neutralization of 1-ethyl-2-alkyl-benzimidazole and tetrafluoroboric acid. The compounds were characterized by FTIR spectra, elemental analysis,1HNMR spectra and thermogravimetric analysis. These novel tetra-fluoroborate salts show good catalytic activity to esterification of benzyl alcohol and acetic acid. Furthermore, a crystal of ([H-ebBiBF4) was prepared with the crystal structure and determined by X-ray diffraction analysis. The molecular is of lamellar structure as mainly π electron ring is stacked interleaving between two layers. The results of cation and anion arranged orderly in pair indicate that the coulombic attraction is more dominant. Simultaneously, the weak local hydrogen bonds C-H···F exist in the molecules.

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