润滑油抽出油制取石油磺酸钠的研究

以抚顺石油一厂减五线馏分油溶剂精制后的抽出油为原料,采用发烟硫酸为磺化剂进行磺化反应制取石油磺酸,进而制取石油磺酸钠。在磺化反应过程中主要考察了反应温度、反应时间和酸油比对石油磺酸收率的影响。在酸油体积比为0.12∶1,反应温度60 ℃,反应时间45 min的条件下,磺化物质量收率为64.14%。与10%氢氧化钠中和反应,用乙醇水溶液在60 ℃条件下萃取出石油磺酸钠,并测定出萃取液中活性物质量含量为42.1%,可作为采油驱油剂使用。     

Characterisation of various grape seed oils by volatile compounds,triacylglycerol composition,total phenols and antioxidant capacity

Grape seed oil (Oleum vitis viniferae) representing a promising plant fat, mainly used for culinary and pharmaceutical purposes as well as for various technical applications, was subject of the present investigation. HS-SPME-GC–MS was applied to study volatile compounds in several seed oil samples from different grape oils. The triacylglycerol (TAG) composition of these oils was analyzed by MALDI-TOF-MS/MS. In addition the total phenol content and the antioxidant capacity (using TEAC) of these oils were determined. The headspace of virgin grape oils from white and red grapes was dominated by ethyl octanoate (up to 27.5% related to the total level of volatiles), ethylacetate (up to 25.0%), ethanol (up to 22.7%), acetic acid (up to 17.2%), ethyl hexanoate (up to 17.4%) and 3-methylbutanol (up to 11.0%). Triacylglycerol composition was found to be dominated by LLL (up to 41.8%), LLP (up to 24.3%), LLO (up to 16.3%) and LOO (up to 11.7%), followed by LOP (up to 9.3%) and LOS/OOO (up to 4.3%). Total phenol content ranged between 59 μg/g and 115.5 μg/g GAE. Antioxidant capacity (TEAC) was analyzed to range between 0.09 μg/g and 1.16 μg/g.     

The selective catalytic oxidation of methane to methyl bisulfate at ambient pressure

The selective catalytic oxidation of methane in 25 wt.% oleum to methyl bisulfate at ambient pressure in presence of PtCl₄ catalyst was investigated. The reaction between methane and sulfuric acid took place at atmospheric pressure if the mass transfer between gas and liquid was sufficient. The process was carried out at 130–220 °C in absorption reactor packed with glass balls 1.5–7 mm in diameter.     

2-丙烯酰胺-2-甲基丙磺酸合成中试研究

介绍了以丙烯腈、发烟硫酸、异丁烯为原料,一步反应生产2-丙烯酰胺-2-甲基丙磺酸（AMPS）的中试研究.该工艺主要由合成、精制、溶剂回收三个单元组成,其中原料投料摩尔比为丙烯腈∶发烟硫酸∶异丁烯=7∶1∶1,加酸反应温度10℃,时间3h;通入异丁烯反应温度40 ℃,时间2.5 h.粗产品收率不低于90％,精制收率不低于65％,精制后可得质量分数大于99％的AMPS产品.