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按照美国的清洁燃料标准特别是移动源空气毒物II(MSAT II)标准,车用汽油的年平均含苯量要降低到0.62%(v)。2011年1月已在美国大炼厂实施,小炼厂在2015年以前实施。欧洲和其它一些国家已经实施汽油最高含苯量1.0%(v)的标准,预计其它地区和国家也采用类似标准。对许多炼油商而言,要以最低成本和最少辛烷值损失实现严格的汽油标准是一个挑战。
According to the United States clean fuel standards, especially the MSAT II standard, the annual average benzene content of motor gasoline is reduced to 0.62% (v). January 2011 has been implemented in the United States large refineries, small refineries implemented by 2015. In Europe and other countries, the maximum benzene content of 1.0% (v) has been implemented, and similar standards are expected in other regions and countries. For many refiners, achieving stringent gasoline standards at the lowest cost and with the least loss of octane is a challenge.