scholarly journals High performance of Au/ZTC based catalysts for the selective oxidation of bio-derivative furfural to 2-furoic acid

2021 ◽  
Vol 149 ◽  
pp. 106234
Author(s):  
Georgia Papanikolaou ◽  
Paola Lanzafame ◽  
Siglinda Perathoner ◽  
Gabriele Centi ◽  
Daniela Cozza ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
High Performance ◽  
Furoic Acid

scholarly journals Zeolite-supported ultra-small nickel as catalyst for selective oxidation of methane to syngas

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Shuhei Yasuda ◽  
Ryota Osuga ◽  
Yusuke Kunitake ◽  
Kazuya Kato ◽  
Atsushi Fukuoka ◽  
...  
Keyword(s):  
Particle Size ◽  
Selective Oxidation ◽  
High Performance ◽  
Carbon Deposition ◽  
Solid Catalyst ◽  
Impregnation Method ◽  
Supported Nickel Catalyst ◽  
Oxidation Of Methane ◽  
High Durability ◽  
Type Zeolite

Abstract The development of simple catalysts with high performance in the selective oxidation of methane to syngas at low temperature has attracted much attention. Here we report a nickel-based solid catalyst for the oxidation of methane, synthesised by a facile impregnation method. Highly dispersed ultra-small NiO particles of 1.6 nm in size are successfully formed on the MOR-type zeolite. The zeolite–supported nickel catalyst gives continuously 97–98% methane conversion, 91–92% of CO yield with a H2/CO ratio of 2.0, and high durability without serious carbon deposition onto the catalyst at 973 K. DFT calculations demonstrate the effect of NiO particle size on the C-H dissociation process of CH4. A decrease in the NiO particle size enhances the production of oxygen originating from the NiO nanoparticles, which contributes to the oxidation of methane under a reductive environment, effectively producing syngas.

Bcl-2 inhibits selective oxidation and externalization of phosphatidylserine during paraquat-induced apoptosis

1997 ◽  
Vol 272 (2) ◽  
pp. C675-C684 ◽  
Author(s):  
J. P. Fabisiak ◽  
V. E. Kagan ◽  
V. B. Ritov ◽  
D. E. Johnson ◽  
J. S. Lazo
Keyword(s):  
Selective Oxidation ◽  
High Performance ◽  
Annexin V ◽  
Membrane Phospholipids ◽  
High Molecular Weight Dna ◽  
Liquid Chromatography Separation ◽  
Potential Component ◽  
Parinaric Acid ◽  
Induced Apoptosis ◽  
Specific Membrane

Oxidative stress is a potential component of the final common pathway leading to apoptosis following many diverse stimuli. Here, we document that the oxidant paraquat caused apoptosis in mouse 32D cells. We examined early paraquat-induced lipid peroxidation after metabolic incorporation of the oxidant-sensitive fluorescent fatty acid cis-parinaric acid (cis-PA) into phospholipids and high-performance liquid chromatography separation of specific phospholipid classes. Paraquat induced peroxidation of cis-PA primarily in phosphatidylserine (PS) and to a lesser extent in phosphatidylinositol (PI) within 2 h. The selective oxidation of PS occurred before signs of cytotoxicity and preceded the externalization of PS as assessed by annexin V binding. Overexpression of Bcl-2 afforded significant protection against paraquat-induced apoptosis, early PS and PI oxidation, and PS externalization but not the ultimate formation of high-molecular-weight DNA fragments. Therefore, both selective phospholipid peroxidation and DNA damage occurred after paraquat exposure, but only the former was specifically associated with apoptosis. We suggest Bcl-2 may inhibit oxidant-induced apoptosis by preventing the peroxidation of specific membrane phospholipids.

Composites of [γ-H2PV2W10O40]3− and [α-SiW12O40]4− supported on Fe2O3 as heterogeneous catalysts for selective oxidation with aqueous hydrogen peroxide

2015 ◽  
Vol 5 (5) ◽  
pp. 2602-2611 ◽  
Author(s):  
Ye Wang ◽  
Keigo Kamata ◽  
Ryo Ishimoto ◽  
Yoshiyuki Ogasawara ◽  
Kosuke Suzuki ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Selective Oxidation ◽  
High Performance ◽  
Heterogeneous Catalysts ◽  
Aqueous Hydrogen Peroxide

The titled heterogeneous catalysts showed high performance for selective oxidation with H2O2.

scholarly journals The controlled catalytic oxidation of furfural to furoic acid using AuPd/Mg(OH)2

2017 ◽  
Vol 7 (22) ◽  
pp. 5284-5293 ◽  
Author(s):  
Mark Douthwaite ◽  
Xiaoyang Huang ◽  
Sarwat Iqbal ◽  
Peter J. Miedziak ◽  
Gemma L. Brett ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Heterogeneous Catalyst ◽  
Selective Oxidation ◽  
Reaction Conditions ◽  
Furoic Acid

The selective oxidation of furfural to furoic acid is achieved at mild reaction conditions over an AuPd/Mg(OH)2 heterogeneous catalyst.

High performance of iron(III) phosphate for selective oxidation of methanol

1993 ◽  
pp. 1606 ◽  
Author(s):  
Dimitar Klissurski ◽  
Vicente Rives ◽  
Nevena Abadzhjieva ◽  
Yordanka Pesheva ◽  
Philip Pomonis ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
High Performance ◽  
Oxidation Of Methanol
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