Researchers have been attempting to characterize heterogeneous catalysts in situ in addition to correlating their structures with their activity and selectivity in spite of many challenges.Here,we review recent experi...Researchers have been attempting to characterize heterogeneous catalysts in situ in addition to correlating their structures with their activity and selectivity in spite of many challenges.Here,we review recent experimental and theoretical advances regarding alkyne selective hydrogenation by Pd‐based catalysts,which are an important petrochemical reaction.The catalytic selectivity for the reaction of alkynes to alkenes is influenced by the composition and structure of the catalysts.Recent progress achieved through experimental studies and atomic simulations has provided useful insights into the origins of the selectivity.The important role of the subsurface species(H and C)was revealed by monitoring the catalyst surface and the related catalytic performance.The atomic structures of the Pd catalytic centers and their relationship with selectivity were established through atomic simulations.The combined knowledge gained from experimental and theoretical studies provides a fundamental understanding of catalytic mechanisms and reveals a path toward improved catalyst design.展开更多
This paper is based on the findings of a survey on 120 students involved in the Interdisciplinary Course on Intercultural Competences （ICIC）, a three-year EU Lifelong Intensive Program project aimed at developing in...This paper is based on the findings of a survey on 120 students involved in the Interdisciplinary Course on Intercultural Competences （ICIC）, a three-year EU Lifelong Intensive Program project aimed at developing intercultural competency in the education, social work and health care professions. The Program approached intercultural competency as a culturally aware ability to cope with unfamiliar situations continuously arising in the current ever-changing society, in which learning has become an ＂endemic condition＂, and the new media have created symbolic resources for actively expressing and constructing identities as an in-progress and negotiated project. Intercultural competency is therefore rethought from a holistic perspective as a part of an educational mission that particularly values one＇s communicative and social experiences as a strategic resource for facilitating learning processes and enhancing professional competency. The presented data show sociality as a clustering factor for intercultural learning and displays a factorial structure, from which a model for intercultural education is inferred, in which bridging social capital, media practice and reflective attitude become crucial for gaining and valuing competency in terms of human capital.展开更多
文摘Researchers have been attempting to characterize heterogeneous catalysts in situ in addition to correlating their structures with their activity and selectivity in spite of many challenges.Here,we review recent experimental and theoretical advances regarding alkyne selective hydrogenation by Pd‐based catalysts,which are an important petrochemical reaction.The catalytic selectivity for the reaction of alkynes to alkenes is influenced by the composition and structure of the catalysts.Recent progress achieved through experimental studies and atomic simulations has provided useful insights into the origins of the selectivity.The important role of the subsurface species(H and C)was revealed by monitoring the catalyst surface and the related catalytic performance.The atomic structures of the Pd catalytic centers and their relationship with selectivity were established through atomic simulations.The combined knowledge gained from experimental and theoretical studies provides a fundamental understanding of catalytic mechanisms and reveals a path toward improved catalyst design.
文摘This paper is based on the findings of a survey on 120 students involved in the Interdisciplinary Course on Intercultural Competences （ICIC）, a three-year EU Lifelong Intensive Program project aimed at developing intercultural competency in the education, social work and health care professions. The Program approached intercultural competency as a culturally aware ability to cope with unfamiliar situations continuously arising in the current ever-changing society, in which learning has become an ＂endemic condition＂, and the new media have created symbolic resources for actively expressing and constructing identities as an in-progress and negotiated project. Intercultural competency is therefore rethought from a holistic perspective as a part of an educational mission that particularly values one＇s communicative and social experiences as a strategic resource for facilitating learning processes and enhancing professional competency. The presented data show sociality as a clustering factor for intercultural learning and displays a factorial structure, from which a model for intercultural education is inferred, in which bridging social capital, media practice and reflective attitude become crucial for gaining and valuing competency in terms of human capital.
