• 关键词：氯氟烃替代物  OH自由基  FTIR  光解产物  评价

• 基金项目：国家自然科学基金

• 陈忠明
• 北京大学技术物理系,北京 100871

• 李金龙
• 北京大学技术物理系,北京 100871

• 张远航
• 北京大学环境科学中心环境模拟与污染控制国家重点联合实验室,北京 100871

• 唐孝炎
• 北京大学环境科学中心环境模拟与污染控制国家重点联合实验室,北京 100871

• 邵可声
• 北京大学环境科学中心环境模拟与污染控制国家重点联合实验室,北京 100871

• 摘要：用长光路FTIR技术研究氟里昂替代物HFC152a(CH₃CHF₂)和HCFC22(CHClF₂)与OH自由基的大气光化学反应,研究了反应产物和反应机理,并对它们的环境影响和工业应用前景进行了评价。HCFC22只能作为过渡性的替代物使用,而HFC152a可以发展成为非常有价值的永久性替代物。

• Abstract：HFC152a (CH₃CHF₂) and HCFC22 (CHClF₂) are proposed as two alternatives for the fully halogenated chlorofluorocarbons (CFCs). The long path FTIR spectrometry was used to study photochemical reactions of HFC152a and HCFC22 with OH radicals, and products and mechanisms were discussed. According to the assessment result for environmental effects and industry use prospects, the authors suggest that HFC152a can be developed into a good permanent substitute, while HCFC22 can be only used as a transient substitute in a limited period.

• Key words：CFC substitutes  OH radical  FTIR  degradation products  assessment.

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