Preparation and characterization of Pd/Al2O3 catalysts on aluminum foam supports for multiphase hydrogenation reactions in rotating foam reactors

2015 ◽  
Vol 94 ◽  
pp. 365-374 ◽  
Author(s):  
Farzad Lali ◽  
Gerald Böttcher ◽  
Paul-Martin Schöneich ◽  
Stefan Haase ◽  
Simone Hempel ◽  
...  
Keyword(s):  
Aluminum Foam ◽  
Hydrogenation Reactions

Fabrication and interfacial characterization of aluminum foam sandwich via fluxless soldering with surface abrasion

2015 ◽  
Vol 123 ◽  
pp. 366-373 ◽  
Author(s):  
Long Wan ◽  
Yongxian Huang ◽  
Shixiong Lv ◽  
Jicai Feng
Keyword(s):  
Aluminum Foam ◽  
Fluxless Soldering

Preliminary NVH Characterization of Metal Foam-Polymer Interpenetrating Phase Composites

2009 ◽  
Author(s):  
Satish Sharma ◽  
Nassif E. Rayess ◽  
Nihad Dukhan
Keyword(s):  
Mathematical Model ◽  
Thermal Stability ◽  
Hybrid Material ◽  
Aluminum Foam ◽  
Metal Foam ◽  
Dynamic Properties ◽  
Metal Foams ◽  
Thermoplastic Polymer ◽  
Open Cell

The damping and basic dynamic properties of a novel type of multifunctional hybrid material known as Metal Foam-Polymer Composite are investigated. This material is obtained by injection molding a thermoplastic polymer through an open cell Aluminum Foam, in essence creating two contiguous morphologies; an Aluminum Foam interconnected “skeleton” with the open pores filled with a similarly interconnected polymer substructure. This coexistence of both materials allows each to contribute its salient properties (e.g. the plastics contributing surface toughness and the metal foams contributing thermal stability). Basic damping testing results are presented for various Aluminum Foam porosities and pore sizes as well as for three types of polymers. A basic mathematical model of the damping is also presented. The integrity of the interface between the Aluminum Foam and the Polymer is discussed in terms of its effect on the overall material damping.

Syntheses and Characterization of Hydrotris(1-pyrazolyl)borate Dihydrogen Complexes of Ruthenium and Their Roles in Catalytic Hydrogenation Reactions

1997 ◽  
Vol 16 (1) ◽  
pp. 34-44 ◽  
Author(s):  
Wai-Chung Chan ◽  
Chak-Po Lau ◽  
Yu-Zhong Chen ◽  
Yi-Qun Fang ◽  
Siu-Man Ng ◽  
...  
Keyword(s):  
Catalytic Hydrogenation ◽  
Dihydrogen Complexes ◽  
Hydrogenation Reactions

Characterization of Porous Carbon Foam as a Material for Compact Recuperators

2006 ◽  
Author(s):  
A. G. Straatman ◽  
N. C. Gallego ◽  
Q. Yu ◽  
B. E. Thompson
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Porous Carbon ◽  
Aluminum Foam ◽  
Carbon Foam ◽  
Small Scale ◽  
Base Temperature ◽  
Extended Surface ◽  
Surface Convection

Experiments are presented to quantify the convective heat transfer and the hydrodynamic loss that is obtained by forcing water through blocks of porous carbon foam (PCF) heated from one side. The experiments were conducted in a small-scale water tunnel instrumented to measure the pressure drop and the temperature rise of the water passing through the blocks and the base temperature and heat flux into the foam block. In comparison to similar porosity aluminum foam, the present results indicate that the pressure drop across the porous carbon foam is higher due to the large hydrodynamic loss associated with the cell windows connecting the pores, but the heat transfer performance suggests that there may be a significant advantage to using PCF over aluminum foam for extended surface convection elements in recuperators and electronic cooling devices.

scholarly journals Synthesis and Characterization of Nickel(II) Homogeneous and Supported Complexes for the Hydrogenation of Furfural to Furfuryl Alcohol

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 684
Author(s):  
Menala Kalumpha ◽  
Leah Charlie Matsinha ◽  
Banothile C. E. Makhubela
Keyword(s):  
Furfuryl Alcohol ◽  
Transfer Hydrogenation ◽  
Synthesis And Characterization ◽  
Mercury Poisoning ◽  
Hydrogenation Reactions ◽  
Molecular Catalysis ◽  
Direct Hydrogenation ◽  
High Resolution Mass Spectroscopy ◽  
Resolution Mass

Nickel(II) complexes have been synthesized and characterized using nuclear magnetic resonance (NMR), infrared spectroscopy, high resolution mass spectroscopy, and elemental analysis. The complexes were evaluated as pre-catalysts in the direct hydrogenation of furfural to furfuryl alcohol. The pre-catalysts C1 and C4 gave higher furfural conversion (97% and 96%, respectively), as a result, they were also evaluated in the transfer hydrogenation of furfural using formic acid as the hydrogen source where higher furfural conversion (93%) was obtained and selectivity (100%) toward the formation of furfuryl alcohol at 4 h. The catalyst C1 was recycled three times with and it was observed that the catalytic activity might be due to a mixture of both molecular catalysis and nanoparticles, as evidenced by the decrease in activity in mercury poisoning experiments. The hydrogenation reactions were also extended to alpha-β unsaturated substrates and were selective toward saturation of the carbonyl functionality over alkene groups.

Characterization of Aluminum Foam Impact Response

2019 ◽  
Vol 51 (5) ◽  
pp. 726-734
Author(s):  
O. V. Byakova ◽  
G. V. Stepanov ◽  
A. O. Vlasov ◽  
V. E. Danylyuk ◽  
N. V. Semenov ◽  
...  
Keyword(s):  
Aluminum Foam ◽  
Impact Response
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