搜索结果: 91-105 共查到“国际动态 化学反应工程”相关记录146条 . 查询时间(0.908 秒)
日本东京工业大学日前发布新闻公报说，该校研究人员开发出一种新方法，能精确控制合金纳米粒子的合成过程，在此基础上制造出由3种金属原子组成、尺寸仅1纳米的合金粒子，可用作工业化学反应的催化剂。由少量原子组成、尺寸只有几纳米或更小的合金粒子有着独特性质，工业应用前景广阔。比起只含一两种金属的材料，由多种金属原子组成的合金纳米粒子通常有更优良的性质，但合成过程中很难同时控制纳米粒子的成分和尺寸。
Rice University chemists have produced a catalyst based on laser-induced graphene that splits water into hydrogen on one side and oxygen on the other side. They said the inexpensive material may be a ...
Catalysts Developed at Carnegie Mellon Efficiently and Rapidly Remove BPA from Water（图）
Catalysts Carnegie Mellon Rapidly Remove BPA Water
2017/9/1
Carnegie Mellon University chemist Terrence J. Collins has developed an approach that quickly and cheaply removes more than 99 percent of bisphenol A (BPA) from water. BPA, a ubiquitous and dangerous ...
Splitting water into hydrogen and oxygen to produce clean energy can be simplified with a single catalyst developed by scientists at Rice University and the University of Houston.The electrolytic film...
New Efficient,Low-Temperature Catalyst for Converting Water and CO to Hydrogen Gas and CO2
Low-Temperature Catalyst Converting Water CO to Hydrogen Gas CO2
2017/7/24
Scientists have developed a new low-temperature catalyst for producing high-purity hydrogen gas while simultaneously using up carbon monoxide (CO). The discovery—described in a paper set to publish on...
UK Chemistry Researchers Develop Catalyst that Mimics the Z-Scheme of Photosynthesis
UK Chemistry Researchers Catalyst that Mimics Z-Scheme of Photosynthesis
2017/7/24
A team of chemists from the University of Kentucky and the Institute of Physics Research of Mar del Plata in Argentina has just reported a way to trigger a fundamental step in the mechanism of photosy...
Stanford scientists use nanotechnology to boost the performance of a key industrial catalyst
Stanford scientists nanotechnology to boost industrial catalyst
2017/7/20
A tiny amount of squeezing or stretching can produce a big boost in catalytic performance, according to a new study led by scientists at Stanford University and SLAC National Accelerator Laboratory.Th...
Rice University scientists have created an efficient, simple-to-manufacture oxygen-evolution catalyst that pairs well with semiconductors for solar water splitting, the conversion of solar e...
Li develops unique photo-catalyst material,turns CO2 emissions into renewable hydrocarbon fuels
Li photo-catalyst material CO2 emissions renewable hydrocarbon fuels
2017/3/14
Researchers with the Department of Mechanical Engineering at Texas A&M University are making the best use of our energy waste — turning one of our most potent pollutants and greenhouse gasses, carbon ...
新型催化剂可高效生产氢能源
新型催化剂 高效生产 氢能源
2016/11/3
美国研究人员在新一期《先进能源材料》上报告说，他们研发出一种新型低成本电解水催化剂，有助于高效生产氢能源。能源转换是发展清洁能源的关键。风能和太阳能发电都是间歇性的，而电网需要持续稳定的输入，因此风能和太阳能发电不能直接接入电网，而需要介质存储起来或转换成其他形式的能源。眼下最有前景的途径之一就是用这些电能来电解水制取氢气和氧气，氢气可以用于燃料电池，这被认为是将电能转换成化学燃料的最环保方式。
新复合催化剂可高效分解水制氢（图）
新复合催化剂 分解水制氢
2016/9/21
美国休斯顿大学官网2016年9月19日发布公告称，该校研究人员联合加州理工大学的同行，发现了一种能高效分解水制氢的新型复合催化剂，水制氢效率已达实用水平，且成本低、无毒，有望克服水制氢的难题，推动氢燃料电池的发展。
美国研发新催化剂 成果将助推可降解塑料生产
美国 新催化剂 降解塑料生产
2016/8/5
塑料是20世纪人类最伟大的发明之一，但普通塑料在自然条件下很难降解，由此带来的环境成本高昂。美国斯坦福大学和国际商用机器公司开拓了低成本高效制造生物可降解塑料的有机催化新途径，相关研究成果已发表在新一期英国《自然·化学》杂志上。与以石油为原料的常规塑料不同，可降解塑料对环境损害小。制取这种塑料需要借助催化剂提高化学反应转化率，但现有催化剂带有金属基，本身难以在自然环境中降解，也难以从最终产品中去除...
Rice’s ‘antenna-reactor’ catalysts offer best of both worlds
Rice’s antenna-reactor catalysts both worlds
2016/8/1
Each year, chemical producers spend billions of dollars on metal catalysts, materials that spur or speed up chemical reactions. Catalysts are used to produce trillions of dollars worth of ch...
Researchers improve catalyst efficiency for clean industries
Researchers catalyst efficiency clean industries
2016/7/15
Researchers have developed a way to use less platinum in chemical reactions commonly used in the clean energy, green chemicals and automotive industries, according to a paper published this week in Sc...
Converting the greenhouse gas carbon dioxide into a useful chemical would be highly desirable. However, the catalysts available to date have not been efficient enough.Researchers have discovered a cat...