Authors:E. Ligeon, J. Bugeat, R. Danielou, J. Fontenille, and A. Guivarch
The use of nuclear reaction methods for hydrogen or deuterium analysis and its applications to hydrogen profiling and lattice
location by channelling experiments is briefly reviewed. The application of these methods to various problems such as the
measurement of surface hydrogen and its stability under ion bombardment, the study of solid solutions of hydrogen metal systems
obtained by implantation, and the correlation of the amount of hydrogen with the physical properties of some amorphous semiconductors,
Authors:Huahua Zhao, Lingjun Chou, and Huanling Song
groups aim to study the catalytic applications of such materials in the reaction of condensation [ 20 ], cyanosilylation [ 17 ], hydrogenation [ 21 ] and so on [ 22 , 23 ]. Fischer et al. [ 24 ] generated a high loading of 35.6 wt% palladium
) [ 1 – 5 ]. Recently, zirconia has drawn much attention for CO hydrogenation. Aside from application as a promoter, it was employed as a catalyst support because of its chemical properties such as acidity, basicity, reducing or oxidizing ability, and
Although hydrogen is an environmentally benign energy source, its storage and transportation requires complex technology because gaseous hydrogen occupies large volume at normal pressure. Organic chemical hydrides
Authors:R. Merabti, K. Bachari, D. Halliche, Z. Rassoul, and A. Saadi
The hydrogenation of aldehydes and ketones containing unsaturated C=C bonds is an important class of reactions to produce fine chemical compounds [ 1 – 5 ]. It was found that nickel, platinum and copper based
Authors:R. Dóczi, J. Csikai, T. Sanami, and M. Fayez-Hassan
A new method based on the epithermal neutron activation has been developed for bulk hydrogen analysis. The sensitivity of the activation method for typical sample dimensions is higher by a factor of ~100 than the neutron reflection technique. Analytical expressions are given for the description of the measured flux density of thermalized neutrons as a function of hydrogen content of different samples. Advantages and limitations of thermal and epithermal neutrons in bulk hydrogen analysis using the foil activation method are also discussed.
Authors:T. Eriksen, H. Christensen, and E. Bjergbakke
The hydrogen production in -irradiated (dose rate 0.73 Gy·s–1), compacted, water-saturated bentonite (=2.12 g·cm–3) has been determined experimentally, using a gas-chromatographic technique. Hydrogen concentration in the clay pore water and hydrogen diffusion out of the irradiated bentonite have been calculated using a homogeneous reaction model. The calculated hydrogen transport out of the bentonite depends on the Fe2+ and HCO
concentration in the pore water. Agreement between experimental and calculated results can be obtained if it is assumed that a 20 m layer of water is formed between, the clay and the -source.
Authors:Andrea B. Merlo, Virginia Vetere, José M. Ramallo-López, Félix G. Requejo, and Mónica L. Casella
starting material for the manufacture of tetrahydrofurfuryl alcohol, and it is also an important chemical intermediate for the manufacture of fragrances, vitamin C and lysine [ 4 – 6 ].
Fig. 1 shows the possible hydrogenation products of
Authors:Jianli Zhang, Subing Fan, Tiansheng Zhao, Wenhuai Li, and Yuhan Sun
Light olefin synthesis from CO hydrogenation has been considered as a possible solution and practical interest to meet the great demands for chemical feedstocks, which may provide a more economical way than the