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William S. Epling Gar B. Hoflund David M. Minahan 《Reaction Kinetics and Catalysis Letters》1999,67(2):225-232
Promoter loading level significantly affects the catalytic behavior of Zn/Cr spinel higher alcohol synthesis (HAS) catalysts.
In this study a 5.9 wt.% Pd-promoted Zn/Cr spinel with a 5 and 7 wt.% K promoter have been tested and compared. At 1500 psig
and 400°C, the catalyst containing 5 wt.% K results in the production of slightly more butanol, less methanol and more hydrocarbons.
Using ion scattering spectroscopy and X-ray photoelectron spectroscopy, differences are found between the two catalyst surfaces
which must be responsible for the differences in catalytic behavior. 相似文献
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Joseph A. Minahan 《Letters in Mathematical Physics》2012,99(1-3):33-58
In this chapter of Review of AdS/CFT Integrability we introduce ${\mathcal{N}=4}$ Super Yang-Mills. We discuss the global superalagebra PSU(2, 2|4) and its action on gauge invariant operators. We then discuss the computation of the correlators of certain gauge invariant operators, the so-called single trace operators in the large N limit. We show that interactions in the gauge theory lead to mixing of the operators. We compute this mixing at the one-loop level and show that the problem maps to a one-dimensional spin chain with nearest neighbor interactions. For operators in the SU(2) sector we show that the spin chain is the ferromagnetic Heisenberg spin chain whose eigenvalues are determined by the Bethe equations. 相似文献
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Niklas Beisert Changrim Ahn Luis F. Alday Zoltán Bajnok James M. Drummond Lisa Freyhult Nikolay Gromov Romuald A. Janik Vladimir Kazakov Thomas Klose Gregory P. Korchemsky Charlotte Kristjansen Marc Magro Tristan McLoughlin Joseph A. Minahan Rafael I. Nepomechie Adam Rej Radu Roiban Sakura Sch?fer-Nameki Christoph Sieg Matthias Staudacher Alessandro Torrielli Arkady A. Tseytlin Pedro Vieira Dmytro Volin Konstantinos Zoubos 《Letters in Mathematical Physics》2012,99(1-3):3-32
This is the introductory chapter of a review collection on integrability in the context of the AdS/CFT correspondence. In the collection, we present an overview of the achievements and the status of this subject as of the year 2010. 相似文献
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