最新nature 高效率甲醇催化制氢 正文+评论？一种新型 催化剂 可以高效率利用 甲醇 催化制备 氢气 ，这一技术使得人们距离绿色能源更进一步，甲醇成为氢能汽车中氢源提供者。 news: A step closer to a methanol economyA ruthenium catalyst has been developed that, at a few parts per million, releases hydrogen gas from methanol, a simple bulk chemical. The advance might allow methanol to be used as a hydrogen source for fuelling vehicles. See Letter p.85Letter: Low-temperature aqueous-phase methanol dehydrogenation to hydrogen and carbon dioxideAbstract:Hydrogen produced from renewable resources is a promising potential source of clean energy. With the help of low-temperature proton-exchange membrane fuel cells, molecular hydrogen can be converted efficiently to produce electricity1–5. The implementation of sustainable hydrogen production and subsequent hydrogen conversion to energy is called ‘‘hydrogen economy’’2. Unfortunately, its physical properties make the transport and handling of hydrogengas difficult. To overcome this, methanol can be used as a material for the storage of hydrogen, because it is a liquid at room temperature and contains 12.6 per cent hydrogen. However, the state-of the-art method for the production of hydrogen from methanol (methanol reforming) is conducted at high temperatures (over 200 degrees Celsius) and high pressures (25–50 bar), which limits its potential applications6–8. Here we describe an efficient lowtemperature aqueous-phase methanol dehydrogenation process, which is facilitated by ruthenium complexes. Hydrogen generation by this method proceeds at 65–95 degrees Celsius and ambient pressure with excellent catalyst turnover frequencies (4,700 per hour) and turnovernumbers (exceeding 350,000). This would make the delivery of hydrogen on mobile devices—and hence the use of methanol as a practical hydrogen carrier—feasible.[filename]nature11891-s1.pdf[/filename 1.gif查看更多3个回答 . 30人已关注
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