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FLOTATION MECHANISM OF FLUORITE AND HEMATITE WITH SODIUM naphthene SULFONATE

中国有色金属学会会刊：英文版 1995年第2期5卷 49-54页

作者： Ge, Yingyong Que, Xuanlan(Changsha Research Institute of Mining and Metallurgy, Changsha 410012) Changsha Research Inst of Mining and Metallurgy Changsha China

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ＦＬＯＴＡＴＩＯＮＭＥＣＨＡＮＩＳＭＯＦＦＬＵＯＲＩＴＥＡＮＤＨＥＭＡＴＩＴＥＷＩＴＨＳＯＤＩＵＭＮＡＰＨＴＨＥＮＥＳＵＬＦＯＮＡＴＥ￥Ｇｅ，Ｙｉｎｇｙｏｎｇ；Ｑｕｅ，Ｘｕａｎｌａｎ（ＣｈａｎｇｓｈａＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＭｉｎｉｎｇ...

关键词： flotation mechanism sodium naphthene sulfonate fluorite hematite

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维普期刊数据库

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Rational design of Ni-MoO_(3–x) catalyst towards efficient hydrodeoxygenation of lignin-derived bio-oil into naphthenes

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Journal of Energy Chemistry 2023年第9期84卷 122-130页

作者： Chao Wang Luxian Guo Kui Wu Xinxin Li Yanping Huang Zhigang Shen Hongyun Yang Yunquan Yang Weiyan Wang Changzhi Li School of Chemical Engineering Xiangtan UniversityXiangtan 411105HunanChina CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Received 30 Nove

Design of a robust catalyst with high activity but the low cost for the hydrodeoxygenation(HDO) of biooils is of great importance to bring the biorefinery concept into *** this study,density functional theory(DFT) calculation was adopted to analyze the optimal location of Ni on MoO_(3-x) containing oxygen vacancy,and the corresponding result demonstrated that metallic Ni cluster located at the neighborhood of oxygen vacancies would significantly evoke HDO *** by DFT results,NiMoO_(4) was first hydrothermally synthesized and then employed to fabricate Ni-MoO_(3-x) catalyst via a low-temperature reduction,where Ni escaped from NiMoO_(4) and was reduced to its metallic *** an evolution of Ni species also induced the formation of oxygen vacancies around metallic Ni *** the HDO of p-cresol,Ni-MoO_(3-x) exhibited high activity with a complete conversion and a methylcyclohexane selectivity of 99.4% at 150℃.Moreover,the catalyst showed good versatility in catalyzing HDO of diverse lignin-derived oxygenates and lignin oil.2D HSQC NMR,gas chromatograph and elemental analysis of the lignin oil demonstrated the high deoxygenation efficiency and saturation of the benzene ring over Ni-MoO_(3-x).In the upgrading of crude lignin oil,the deoxygenation degree was up to 99%,and the overall carbon yield of the naphthenes was as high as 69.4%.Importantly,the structures and carbon numbers of the naphthene products are similar to jet fuel-range cycloalka nes,which are expected to have a high density that can be blended into jet fuel to raise the range(or payload) of *** work demonstrates the feasibility for improving the targeted catalytic reactivity by rational tailoring the catalyst structure under the guidance of theoretical analysis,and provides an energy-efficient route for the upgrading of lignin crude oil into valuable naphthenes.

关键词： Ni-MoO_(3–x)catalyst Hydrodeoxygenation Lignin-derived bio-oil Metal-vacancy interface naphthene Renewable energy

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Mechanistic Insights into the Catalytic Cracking of Cyclohexane

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China Petroleum Processing & Petrochemical Technology 2022年第4期24卷 12-20页

作者： Chen Hui Yan Jiasong Su Youyou Wei Xueer Li Rui Wang Peng Yu Shanqing Dai Zhenyu College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China SINOPEC Research Institute of Petroleum Processing Co. Ltd.Beijing 100083China

Although naphthenes have long been identified as important feedstock components for the production of light olefins and aromatics in fluid catalytic cracking units,their cacking mechanism and microscopic reaction networks,such as activation modes,ring-opening paths,and the production of aromatics,remain *** this context,we reported experimental and computational work aimed at elucidating the reaction network of naphthenes in fluid catalytic cracking using cyclohexane as the model ***,the main reactions for the formation of highly selective and value-added products such as light olefins and aromatics were ***,the proportions of cyclohexane activation via(i)the non-classical carbonium mechanism and(ii)the classical carbenium mechanism were analyzed by data fitting methods,which revealed that around 32.6%of cyclohexane was initiated by path(i),and the remaining naphthene was activated by path(ii).Moreover,our DFT results showed that the ring opening of cyclohexane through pathway(i)was more difficult than that through path(ii),and ring opening followed by the ring contraction of cyclohexane carbenium ions was the most energetically favorable route among the different ring-opening ways.

关键词： fluid catalytic cracking naphthene cyclohexane alkane activation ring opening

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GC-MS在重质馏分油组成分析中的应用

GC-MS在重质馏分油组成分析中的应用

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2005年全国有机质谱学术交流会

作者：周敏扬子石化研究院

国内外一些大型石化公司的乙烯厂都在应用Spyro和线性规划软件(例如PIMS)选择和优化乙烯原料,对原料性质和组成的分析时间越短,了解得越详细,利用软件来模拟乙烯裂解炉的运作就会越准确,越有意义。

关键词： GC - MS Analysis HVGO Normal-iso paraffine naphthene Arene

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核磁共振在基础油产品结构分析中的应用

核磁共振在基础油产品结构分析中的应用

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第十一届全国波谱学学术会议

作者：贺瑜玲王京黄蔚霞石油化工科学研究院石油化工科学研究院石油化工科学研究院

＜正＞基础油的异构化程度及方式是影响其凝点、倾点、粘度指数（V．I．）等理化性质的重要因素,因此在基础油产品的异构降凝研究工作中,尽可能多的掌握其结构信息是必不可少的．通过对基础油进行 1D、2D NMR 分析,可识别异构烷烃中不... 详细信息

＜正＞基础油的异构化程度及方式是影响其凝点、倾点、粘度指数（V．I．）等理化性质的重要因素,因此在基础油产品的异构降凝研究工作中,尽可能多的掌握其结构信息是必不可少的．通过对基础油进行 1D、2D NMR 分析,可识别异构烷烃中不同类型的支化形式,进而建立方法,可估计出油中正构、异构烃的含量,及其他重要结构参数,如支化度,平均碳链长度等。在石油产品的结构组成测定中,环烷环碳的测定比较困难,基于 *** 和 *** 的理论,环烷环碳吸收峰不能彼此分开,形成一个24—55δ之间的包络线宽峰, 成为链烷碳尖锐吸收峰的底座。本工作采用差谱法测定环烷环碳的含量,经两种不同的算法得到了相互吻合的结果,故确认了该方法在实际油品分析中的合理性。

关键词： base oil NMR branded structure naphthene

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