A Study on FCC gasoline hydro-upgrading was written by Yang, Xiaoyu;Yuan, Jingli;Wang, Xiangsheng;Guo, Xinwen. And the article was included in Zhongwai Nengyuan in 2012.Application of 1795-01-3 This article mentions the following:
Producing clean gasoline with low sulfur and olefin contents and high octane number is required by the need for achieving sustainable growth of energy economy. China began implementing the Limits and Measurement of Pollutants Emitted by Light Vehicles (China Phase IV) in 2011 nationwide. According to the standard, the volume fraction of olefin in gasoline should not exceed 18%, that of aromatic hydrocarbon not exceed 35%, and the content of sulfur not exceed 50μg/g. Around 80% of gasoline products in China come from FCC gasoline and the sulfur content of FCC gasoline accounts for some 90% of sulfur in gasoline. FCC gasoline contains high contents of olefin (mass fraction : 30%-55%) and sulfur (150-1500μg/g). Sulfur in FCC gasoline primarily exists in the forms of thiophene and thiophene derivatives The article analyzes the contribution of hydrocarbon composition in FCC gasoline fractions to octane value and distribution of sulfide and conducts a preliminary forecast of the possibility and results of reactions such as hydrogen transfer, isomerization and aromatic hydrocarbon generation from a thermodn. perspective. The article suggests retaining more high octane-value olefin components while ensuring deep desulfurization and highly selectively converting olefin to aromatic hydrocarbon to maintain the octane value of gasoline products produced. In the experiment, the researchers used many compounds, for example, 3-Ethylthiophene (cas: 1795-01-3Application of 1795-01-3).
3-Ethylthiophene (cas: 1795-01-3) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Application of 1795-01-3
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem