Demore W B, Yung Y L
Science. 1982 Sep 24;217(4566):1209-13. doi: 10.1126/science.217.4566.1209.
Photochemical processes in planetary atmospheres are strongly influenced by catalytic effects of minor constituents. Catalytic cycles in the atmospheres of Earth and Venus are closely related. For example, chlorine oxides (CIOx) act as catalysts in the two atmospheres. On Earth, they serve to convert odd oxygen (atomic oxygen and ozone) to molecular oxygen. On Venus they have a similar effect, but in addition they accelerate the reactions of atomic and molecular oxygen with carbon monoxide. The latter process occurs by a unique combination of CIOx catalysis and sulfur dioxide photosensitization. The mechanism provides an explanation for the very low extent of carbon dioxide decomposition by sunlight in the Venus atmosphere.
行星大气中的光化学过程受到微量成分催化作用的强烈影响。地球和金星大气中的催化循环密切相关。例如，氯氧化物（CIOx）在这两种大气中都起到催化剂的作用。在地球上，它们促使奇数氧（原子氧和臭氧）转化为分子氧。在金星上它们有类似的作用，但除此之外，它们还加速了原子氧和分子氧与一氧化碳的反应。后一过程是由CIOx催化和二氧化硫光敏化的独特组合发生的。该机制解释了金星大气中太阳光导致二氧化碳分解程度极低的原因。
