【完全版】オンラインカジノとは？仕組みや違法性

International Affairs Students Current Students Alumni Faculty/Staff Careers--> TOHOKU UNIVERSITYCREATING GLOBAL EXCELLENCE Search 日本語 Contact Tohoku University --> About Facts & Figures Facilities Organization Chart History President's Message Top Global University Project Designated National University Global Network Promotional Videos Academics Undergraduate Graduate Courses in English Exchange Programs Summer Programs Double Degree Programs Academic Calendar Syllabus Admissions Undergraduate Admissions Graduate Admissions Fees and Expenses Financial Aid Research Feature Highlights Research Releases University Research News Research Institutes Visitor Research Center Research Profiles Academic Research Staff Campus Life International Support Office IT Services Facilities Dining & Shops Campus Bus Clubs & Circles News University News Research--> Arts & Culture Health & Sports Campus & Community Press Release--> International Visit Alumni Careers Events Exhibits Music Special Event Lecture Alumni--> Map & Directions Campus Maps & Bus--> Facilities Map--> TOHOKUUNIVERSITY About Academics Admissions Research Campus Life News Events International Affairs Students Current Students Alumni Faculty/Staff Promotional Videos Subscribe to our Newsletter Map & Directions Contact Jobs & Vacancies Emergency Information Site Map 日本語 Close Home Research News Interdisciplinary interactions inspire new discovery: A case of catalysts Research News Interdisciplinary interactions inspire new discovery: A case of catalysts 2018-11-01 Researchers in Japan have found new good catalysts using unique "Heusler" alloys, following an interdisciplinary approach. Most studies on catalysts have been conducted by researchers in chemistry. However, catalysts also relate to other research fields. For example, materials science including metallurgy is effective for making and analyzing catalysts, and solid state physics is necessary to understand an electronic structure which is an important factor to catalytic properties. Therefore, an approach from different fields would be effective for catalytic studies. Heusler alloys (formula: X2YZ) are very popular as magnetic (spintronic), thermoelectric, and shape memory materials. Although they are almost unknown as catalysts, they have great features: 1) having so many possible sets of X, Y, and Z; and 2) elemental substitution is possible (e.g. X2YZ1-xZ'x). Feature 1 expects a discovery of new catalysts and feature 2 enables fine-tuning of catalytic properties. Takayuki Kojima of Tohoku University, whose PhD involved researching magnetic materials, conceived the use of Heusler alloys as catalysts, and has conducted the research with the An Pang Tsai research group that studies catalysts from a metallurgy viewpoint. They found good catalysts, Co2 (Mn or Fe) Ge, for selective hydrogenation of alkyne, based on feature 1. They also demonstrated the precise control of catalysis based on feature 2. The discovered catalysts do not include precious noble metals unlike industrial Pd-based catalysts. They may replace the Pd catalysts if the surface area is enlarged enough e.g. by making nanoparticles. In addition, the tuning of catalysis by elemental substitution is hard to do in ordinary alloys. This discovery not only has practical advantage but will also be useful for investigating mechanisms of catalysis on alloys which are still not fully revealed. As a next step, the team aims to develop practical catalysts with large surface areas and to reveal the mechanisms of good performance in depth. "We believe that this study will inspire many researchers in all related fields to try to find good Heusler catalysts for various reaction processes," said Kojima. Takayuki Kojima with the catalytic measurement system. Copyright: Tohoku University Press release in Japanese Publication Details: Title: Catalysis-tunable Heusler alloys in selective hydrogenation of alkynes: A new potential for old materialsAuthors: Takayuki Kojima, Satoshi Kameoka, Shinpei Fujii, Shigenori Ueda, and An-Pang TsaiJournal: Science AdvancesDOI: 10.1126/sciadv.aat6063 Contact: Takayuki Kojima (Profile)The Frontier Research Institute for Interdisciplinary SciencesTohoku UniversityEmail: takayuki.kojima.b4tohoku.ac.jp Archives 2014&＃24180; 2015&＃24180; 2016&＃24180; 2017&＃24180; 2018&＃24180; 2019&＃24180; 2020&＃24180; 2021&＃24180; 2022&＃24180; 2023&＃24180; Page Top About Tohoku University Academics Admissions Research Campus Life News Events International Affairs Students Alumni Promotional Videos Subscribe to our Newsletter Map & Directions Contact Tohoku University Jobs & Vacancies Emergency Information Site Map Media Enquiries Parent & Family Support Public Facilities Contact Tohoku University