To produce clean energy, the study on oxidation desulfurization from catalytic cracking gasoline by photocatalysis is investigated.

为生产清洁能源，采用光催化氧化法对催化裂化汽油进行了脱硫研究。

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The green catalytic processes include new catalyst materials, supercritical fluid technology, new reactor technology, clean raw material route, and utilization of renewable resources, etc.

其中主要包括基于新催化材料、超临界流体技术、新反应器技术、清洁原料路线以及再生资源利用等。

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Urea injection, which helps catalytic converters clean up the exhaust of diesel engines, sounds like a pain in the neck.

WSJ: Cars With a Higher Clearance

As an example, Pell pointed to platinum, a valuable commodity which is a critical part of catalytic converters for cars as well as clean-tech fuel cells.

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John sees his job as building EMW into a global leader in effective, catalytic solutions to development issues such as the lack of clean water and high infant mortality.

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