搜索结果: 91-105 共查到“国际动态 化学反应工程”相关记录142条 . 查询时间(1.514 秒)
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...
Catalyst could make production of key chemical more eco-friendly
Catalyst key chemical eco-friendly
2016/4/13
The world has more carbon dioxide than it needs, and a team of Brown University chemists has come up with a potential way to put some of it to good use.The researchers developed a new composite cataly...
向“甲醇经济”迈出重要一步 空气中二氧化碳可被直接转化为甲醇
二氧化碳 甲醇经济
2016/2/22
诺贝尔化学奖获得者、南加利福尼亚大学化学系教授乔治·欧拉率领团队,首次采用基于金属钌的催化剂,将从空气中捕获的二氧化碳直接转化为甲醇燃料,转化率高达79%。该研究向通往未来“甲醇经济”迈出了重要一步。相关研究成果刊登在最新一期《美国化学学会杂志》上。
新催化剂将二氧化碳变为燃料可高效分离温室气体(图)
催化剂 二氧化碳 燃料
2015/8/25
植物擅长把二氧化碳从空气中分离出来。但它们太慢了,科学家希望能够加快这一从大气中去除温室气体的过程。如今,美国研究人员报告说,通过开发出一种能够将二氧化碳转化为一氧化碳和氧气的多孔材料,他们已朝着这一目标迈出了第一步。研究人员指出,新材料不但能够清洁我们的天空,还可能成为制造源自可再生能源的燃料的新起点。
全新化学反应率先破坏最强化学键
化学键 化学反应
2015/8/24
一种全新化学反应完全颠覆了传统反应中先破坏最弱化学键的模式,而先朝最强的化学键“开刀”,并可以在化学合成中形成全新的中间体。这一颠覆传统的化学反应模式证明,化学家们完全可以开创性地获得常规方法无法企及的一些化合物。相关论文发表在《美国化学协会杂志》上。