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<p>Selective hydrogenation of cinnamaldehyde using palladium based bimetallic catalysts Pd-M/TiO2 (M=Cu, Ag and Au)</p>

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Title Statement <p>Selective hydrogenation of cinnamaldehyde using palladium based bimetallic catalysts Pd-M/TiO2 (M=Cu, Ag and Au)</p>
 
Added Entry - Uncontrolled Name A, Saranya ; Department of Chemistry, AVC College, Mannampandal, Mayiladuthurai,609 305, India
G, Vivekanandan ; Department of Chemistry, AVC College, Mannampandal, Mayiladuthurai,609 305, India
KR, Krishnamurthy R; National Centre for Catalysis Research, Indian Institute of Technology, Madras, Chennai 600 036, India
B, Viswanathan ; National Centre for Catalysis Research, Indian Institute of Technology, Madras, Chennai 600 036, India
Department of Science and Technology, Govt.of India
 
Uncontrolled Index Term Catalysis
Bimetallic Pd catalysts, cinnamaldehyde hydrogenation, nano scale alloys, synergistic effect, reactive hydrogen.
 
Summary, etc. <p>Pd based bimetallic catalysts, Pd-M, (M=Cu, Ag, and Au) supported on TiO<sub>2</sub> P-25, have been prepared by chemical reduction with glucose and characterized by XRD, TEM, XPS, DRS, TPR and H<sub>2</sub>TPD. Activity for the conversion of cinnamaldehyde (CAL) and selectivity to hydro-cinnamaldehyde (HCAL), cinnamyl alcohol (COL) and hydrocinnamyl alcohol (HCOL) have been evaluated in the temperature range of 120-140°C for 1 hr and 10 bar hydrogen pressure. For comparison, monometallic Cu, Ag and Au (1% w/w in each case) catalysts supported on TiO<sub>2</sub> P-25 have been prepared and evaluated. DRS and XPS studies reveal nanoscale alloy formation and re-distribution of charges in bimetallic catalysts. Bimetallic Pd-Cu displays higher CAL conversion compared to Pd-Ag and Pd-Au. Besides the favorable electronic and ensemble effects, availability of reactive hydrogen on Pd-Cu, as revealed by the lowest hydrogen desorption temperature, is an additional factor that contributes towards the higher activity of Pd-Cu. Bimetallic catalysts are stable up to five reaction cycles, without any loss of Pd or structural integrity.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2021-11-11 16:14:19
 
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http://op.niscair.res.in/index.php/IJCA/article/view/53855
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 60, ##issue.no## 10 (2021): INDIAN JOURNAL OF CHEMISTRY- SECTION A
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCA/article/download/53855/465573489
http://op.niscair.res.in/index.php/IJCA/article/download/53855/465573490
http://op.niscair.res.in/index.php/IJCA/article/download/53855/465573491
 
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