Catalytic transformation of 2,5-furandicarboxylic acid to adipic acid over niobic acid-supported Pt nanoparticles

2019 ◽  
Vol 55 (55) ◽  
pp. 8013-8016 ◽  
Author(s):  
Longfu Wei ◽  
Junxian Zhang ◽  
Weiping Deng ◽  
Shunji Xie ◽  
Qinghong Zhang ◽  
...  
Keyword(s):  
Adipic Acid ◽  
Pt Nanoparticles ◽  
Pt Catalyst ◽  
Catalytic Transformation ◽  
Furandicarboxylic Acid ◽  
Niobic Acid ◽  
Supported Pt Catalyst

Biomass-derived 2,5-furandicarboxylic acid was successfully converted to adipic acid over a niobic acid-supported Pt catalyst in water under H2.

Selective Hydrogenation of p-Chloronitrobenzene Catalyzed by FexOY@C Supported Pt-Catalyst

2014 ◽  
Vol 960-961 ◽  
pp. 221-224
Author(s):  
Jie Wu ◽  
Guang Yin Fan ◽  
Wen Jun Huang
Keyword(s):  
Reaction Time ◽  
Selective Hydrogenation ◽  
Hydrogen Pressure ◽  
Room Temperature ◽  
Catalytic Properties ◽  
Pt Nanoparticles ◽  
Pt Catalyst ◽  
Water Mixture ◽  
Supported Pt Catalyst

FexOy@C nanocomposites were synthesized and used as carriers for depositing Pt nanoparticles. Catalytic properties of the nanocomposites were investigated for the hydrogenation of p-chloronitrobenzene at room temperature and balloon hydrogen pressure. The catalyst Pt/FexOy@C was extremely active for the hydrogenation of p-chloronitrobenzene. Completely conversion of p-chloronitrobenzene was achieved with a selectivity of 99.7 % in ethanol-water mixture in a reaction time of 40 min. Moreover, it can be reused four times without loss of any activity.

N-doped carbon supported Pt catalyst for base-free oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid

2016 ◽  
Vol 526 ◽  
pp. 1-8 ◽  
Author(s):  
Xuewang Han ◽  
Chaoqun Li ◽  
Yong Guo ◽  
Xiaohui Liu ◽  
Yongguang Zhang ◽  
...  
Keyword(s):  
Pt Catalyst ◽  
Furandicarboxylic Acid ◽  
Free Oxidation ◽  
Supported Pt Catalyst

scholarly journals Hybrid Structure of TiO2-Graphitic Carbon as a Support of Pt Nanoparticles for Catalyzing Oxygen Reduction Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1196
Author(s):  
Su-Jin Jang ◽  
Yun Chan Kang ◽  
Jin-Su Hyun ◽  
Tae Ho Shin ◽  
Young Wook Lee ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Pt Nanoparticles ◽  
Hybrid Structure ◽  
Reduction Reaction ◽  
Graphitic Carbon ◽  
Pt Catalyst ◽  
Metal Support Interaction ◽  
Activity Loss ◽  
Supported Pt Catalyst

The durability of catalysts in fuel cells is a longstanding issue that needs to be resolved. Catalyst stability of the fuel cell has always been a problem, studies are underway to address them. Herein, to address this issue, we synthesize a hybrid structure consisting of SP carbon (SP) as the graphitic carbon and TiO2 as the metal oxide using a microwave method for use as a support for Pt nanoparticles. Anatase TiO2 and Pt nanoparticles with sizes of ~5 and 3.5 ± 1.4 nm, respectively, are uniformly dispersed on a modified graphitic SP carbon support (Pt-TiO2-SP). This supported Pt catalyst exhibits significantly improves durability in the oxygen reduction reaction (ORR). Furthermore, the Pt-TiO2-SP carbon hybrid catalyst manifests superior electrocatalytic stability and higher onset potential in ORR than those exhibited by Pt-SP carbon without TiO2. Pt-TiO2-SP exhibits an activity loss of less than 68 mV after 5000 electrochemical cycles, whereas an activity loss of ~100 mV is observed for Pt-SP carbon in a stability test. These results suggest that the strong metal–support interaction in TiO2-supported Pt catalyst significantly enhances the activity of Pt nanocatalyst.

Superior Long-Term Stability of a Mesoporous Alumina-Supported Pt Catalyst in the Hydrodeoxygenation of Palm Oil

2021 ◽  
Vol 9 (3) ◽  
pp. 1193-1202
Author(s):  
Hwiram Jeong ◽  
Hari Babu Bathula ◽  
Tae Wan Kim ◽  
Gi Bo Han ◽  
Jung Hee Jang ◽  
...  
Keyword(s):  
Palm Oil ◽  
Mesoporous Alumina ◽  
Pt Catalyst ◽  
Term Stability ◽  
Long Term Stability ◽  
Supported Pt Catalyst

scholarly journals Tuning the Reaction Selectivity over MgAl Spinel-Supported Pt Catalyst in Furfuryl Alcohol Conversion to Pentanediols

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 415
Author(s):  
Xinsheng Li ◽  
Jifeng Pang ◽  
Jingcai Zhang ◽  
Xianquan Li ◽  
Yu Jiang ◽  
...  
Keyword(s):  
Furfuryl Alcohol ◽  
Pt Nanoparticles ◽  
Catalytic Performance ◽  
Major Product ◽  
Pt Catalyst ◽  
Reaction Products ◽  
Strong Base ◽  
Reaction Selectivity ◽  
Supported Pt Catalysts ◽  
Alcohol Conversion

Catalytic conversion of biomass-derived feedstock to high-value chemicals is of remarkable significance for alleviating dependence on fossil energy resources. MgAl spinel-supported Pt catalysts were prepared and used in furfuryl alcohol conversion. The approaches to tune the reaction selectivity toward pentanediols (PeDs) were investigated and the catalytic performance was correlated to the catalysts’ physicochemical properties based on comprehensive characterizations. It was found that 1–8 wt% Pt was highly dispersed on the MgAl2O4 support as nanoparticles with small sizes of 1–3 nm. The reaction selectivity did not show dependence on the size of Pt nanoparticles. Introducing LiOH onto the support effectively steered the reaction products toward the PeDs at the expense of tetrahydrofurfuryl alcohol (THFA) selectivity. Meanwhile, the major product in PeDs was shifted from 1,5-PeD to 1,2-PeD. The reasons for the PeDs selectivity enhancement were attributed to the generation of a large number of medium-strong base sites on the Li-modified Pt catalyst. The reaction temperature is another effective factor to tune the reaction selectivity. At 230 °C, PeDs selectivity was enhanced to 77.4% with a 1,2-PeD to 1,5-PeD ratio of 3.7 over 4Pt/10Li/MgAl2O4. The Pt/Li/MgAl2O4 catalyst was robust to be reused five times without deactivation.

Investigation of n-hexane dehydrocyclization over supported Pt catalyst modified by adsorbed rhenium

1982 ◽  
Vol 18 (1-2) ◽  
pp. 175-179 ◽  
Author(s):  
J. Margitfalvi ◽  
M. Hegedűs ◽  
S. Szabó ◽  
F. Nagy
Keyword(s):  
Pt Catalyst ◽  
Supported Pt Catalyst

AC-impedance spectroscopy of anodic reactions with adsorbed intermediates: electro-oxidations of 2-propanol and methanol on carbon-supported Pt catalyst

2004 ◽  
Vol 573 (1) ◽  
pp. 99-109 ◽  
Author(s):  
Junichiro Otomo ◽  
Xiaoen Li ◽  
Takeshi Kobayashi ◽  
Ching-ju Wen ◽  
Hidetoshi Nagamoto ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Ac Impedance ◽  
Pt Catalyst ◽  
Ac Impedance Spectroscopy ◽  
Anodic Reactions ◽  
Supported Pt Catalyst
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