Author
J. Haber
Bio: J. Haber is an academic researcher. The author has contributed to research in topics: Heterogeneous catalysis. The author has an hindex of 1, co-authored 1 publications receiving 24 citations.
Topics: Heterogeneous catalysis
Papers
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26 citations
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TL;DR: The theoretical basis behind carbon and sulfur poisoning is studied, before examining the strategies toward carbon and sulphur tolerance used so far in the SOFC literature, and the more extensive relevant heterogeneous catalysis literature is studied for strategies and materials which could be incorporated intocarbon and sulfur tolerant fuel cells.
Abstract: Solid oxide fuel cells (SOFCs) are a rapidly emerging energy technology for a low carbon world, providing high efficiency, potential to use carbonaceous fuels, and compatibility with carbon capture and storage. However, current state-of-the-art materials have low tolerance to sulfur, a common contaminant of many fuels, and are vulnerable to deactivation due to carbon deposition when using carbon-containing compounds. In this review, we first study the theoretical basis behind carbon and sulfur poisoning, before examining the strategies toward carbon and sulfur tolerance used so far in the SOFC literature. We then study the more extensive relevant heterogeneous catalysis literature for strategies and materials which could be incorporated into carbon and sulfur tolerant fuel cells.
220 citations
TL;DR: In this paper, a review of the recent progress in joint theoretical and experimental studies aiming at atomic structure determination of low-dimensional metal oxides is presented, and it is shown that often the only way of an unambiguous atomic structure discovery of lowdimensional systems are experimental studies combined with theoretical calculations.
91 citations
TL;DR: This review summarizes recent achievements in the molten salt electrochemistry of silicon, highlighting subjects of technological significance such as the production of silicon by silica electro-deoxidation, the formation of photoactive layers, silicon electrorefining, and the synthesis of semiconductors as well as nanostructures for energy storage applications.
Abstract: Silicon electrochemistry has the potential to advance sustainable energy solutions by offering environmentally friendly and secure technologies that can contribute to the low-carbon economy. Electr...
58 citations
TL;DR: In this paper, a detailed analysis of the experimental XPS envelopes of the model MoO3/Al2O3 and Mo3/SiO2 systems was performed using a curve fitting procedure.
51 citations
TL;DR: In this article, isolated molybdenum centers bearing either one (oxomoly bdenum system) or two (dioxomolybdasilsesquioxanes) terminal oxo ligands are considered.
Abstract: Isolated molybdenum centers bearing either one (oxomolybdenum system) or two (dioxomolybdenum system) terminal oxo ligands are considered, which are modeled by appropriate mononuclear oxomolybdenum methoxides and oxomolybdasilsesquioxanes. Although the oxidation process in both systems is characterized by the same fundamental steps, that is, dissociative addition of methanol followed by rate-determining hydrogen abstraction from the methoxy group, the mechanism of the oxidation reaction differs in each case. In the oxomolybdenum system, the first step leads to cleavage of a bond in a Mo−O−Si sequence and the formation of a surface molybdenum methoxide species. Hydrogen is then abstracted from the methoxide ligand by a terminal oxo ligand in a process entailing a closed-shell transition structure. In contrast, the preferred mechanism in the dioxomolybdenum system involves a hydroxomolybdenum methoxide intermediate formed without cleavage of a bond in a Mo−O−Si sequence. Furthermore, the hydrogen abstractio...
39 citations