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【答案】应助回帖
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ankang276: 金币+20, 翻译EPI+1, ★★★很有帮助 2012-05-03 13:35:58
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In order to meet the increasingly stringent environmental regulations and to follow the rapid development of automobile industry, various countries have constituted stringent standards of lubricant with the characteristic of low phosphorus, low sulfur, low ash, high oxidation resistance, detergency and dispersion, low volatility, good viscosity-temperature and low temperature fluidity. Hydroisomerization technology is the most effective method to achieve high-quality lube base oil production in the 20th century, and its core technology is hydroisomerization catalyst and molecular sieves carrier. Therefore, it is particularly important to develop lube base oil hydroisomerization catalyst with high stability and high selectivity. |
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