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甲醇成为连云港进口量 大的化工品

来源: 编辑: 人气:1054 时间:2017-07-20

  凯茵化工讯 美国科学家近日在华盛顿举行的美国陶氏环氧树脂化学学会年会上报告说,他们为一种细菌装上“太阳能电池板”,使它学会光合作用,利用太阳能生产有机化合物,且效率比植物光合作用更高。

  人工光合作用是可再生能源和绿色化工方面的一个研究热点。美国加利福尼亚大学伯克利分校的研究人员说,目前的人工光合作用手段大多成本较高,他们的这项技术所用材料相对廉价,而且不会产生废物。

  研究人员把能高效吸收阳光的硫化镉半导体纳米晶体覆盖在能生产乙酸的热醋穆尔氏菌表面,使它能利用太阳能运作,以二氧化碳和水为原料高效合成乙酸。

  乙酸是一种用途广泛的化工原料。产乙酸菌一般生活在土壤中缺乏氧气的环境里,通过无氧呼吸过程生产乙酸。实验表明,装备硫化镉“太阳能电池板”的热醋穆尔氏菌能大幅提高生产乙酸的速度,运作效率可达80%以上,比植物的光合作用效率更高,并且这种反应过程能自行维持下去。

  研究人员表示,该技术在付诸实用之前还有待进一步改善,比如用 材料取代硫化镉。此外,这种光合作用过程在自然界里也有可能发生,如果将来科学界发现有类似功能的天然生物,将具有重要的应用价值。

Bacteria installed "solar panels" more efficient synthesis of acetic acid

Kailin Chemical News US scientists recently held at the annual meeting of the American Chemical Society in Washington reported that they are a bacteria loaded with "solar panels" to make it learn photosynthesis, the use of solar energy to produce organic compounds, And the efficiency of photosynthesis higher than plants.

Artificial photosynthesis is a hot topic in renewable energy and green chemistry. Researchers at the University of California, Berkeley, say most of the current artificial photosynthesis techniques are costly and their technology is relatively cheap and does not generate waste.

Researchers cover CdS semiconductor nanocrystals that absorb sunlight efficiently on the surface of M. thermoacetica producing acetic acid, enabling it to operate on solar energy and efficiently synthesize acetic acid from carbon dioxide and water.

Acetic acid is a widely used chemical raw material. Acetogenic bacteria generally live in an environment lacking oxygen in the soil and produce acetic acid through anaerobic respiration. Experiments show that equipped with cadmium sulfide "solar panels" Moore vinegar can greatly increase the rate of production of acetic acid, the operating efficiency of up to 80%, higher than the photosynthesis of plants more efficient, and this reaction process Can maintain on its own.

Researchers say the technology needs further improvement before it can be put to practical use, such as substituting non-toxic materials for cadmium sulphide. In addition, this process of photosynthesis may occur in nature, if the scientific community in the future find similar functions of natural organisms, will have important application value.

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【版权声明】秉承互联网开放、包容的精神,凯茵化工欢迎各方(自)媒体、机构转载、引用我们原创内容,但要注明来源凯茵化工;同时,我们倡导尊重与保护知识产权,如发现本站文章存在版权问题,请将版权疑问、授权证明、版权证明、联系方式等,发邮件至 app@shkingchem.com,我们将第一时间核实、处理,感谢您的配合。

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