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汽油
相关语句
  gasoline
    HYDROCARBONS IN THE 85—125℃ FRACTION OF YU-MEN GASOLINE
    玉门汽油85~125℃馏分单体烃组成研究
短句来源
    STUDY OF MIXED CATALYSTS(Cu-Zn-AI/ZEOLITE)FOR ONE STEP GASOLINE SYNTHEIS FROM CO_+H_2 Ⅰ.EFFECTS OF ZEOLITES
    CO+H_2一段法合成汽油复合催化剂的研究 Ⅰ.分子筛的影响
短句来源
    STUDY OF MIXED CATALYSTS(Cu-Zn-AI/ZEOLITE)FOR ONE STEP GASOLINE SYNTHESIS FROM CO_+H_2 Ⅱ.EFFECTS OF REACTION CONDITION ON PRODUCT SELECTIVITY
    CO+H_2一段法合成汽油复合催化剂的研究 Ⅱ.反应条件对产物选择性的影响
短句来源
    Study on ZSM-5 Zeolite for Moelificating of Gasoline
    汽油在ZSM-5沸石上改质的研究
短句来源
    Direct Determination of Lead in Gasoline by Flame-AAS
    超声平衡雾化集中进样火焰原子吸收法直接测定汽油中铅含量
短句来源
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  petrol
    A PETROL INTERFERENCE RESISTENT ALCOHOL SENSOR
    一种抗汽油干扰的酒精传感器
短句来源
    The present paper contains a number of rare earth perovskite oxides such as LnMO_3(Ln=La, Sm, Nd; M=Fe, Co,Ni). The structures of these substances have been analysed and the sensitivity of the sensor made by them has been tested with alcohol petrol and so on.
    本文用共沉淀法制备出LnMO_3(Ln=La,Sm,Nd;M=Fe,Co,Ni)系列材料,分析了材料的结构,并制成相应的元件,对乙醇、汽油等气体进行了检测。
短句来源
    The results about selected ion flow tube/mass spectrometry (SIFT/MS) study of the different compounds in petrol and diesel vapors using H3O+ , NO+ as the precursor ions are reported.
    采用选择离子流动管质谱(SIFT/MS)装置,以H3O+、NO+为初始离子对汽油和柴油蒸汽进行了研究,质谱分析表明,汽油和柴油主要由C-H化合物组成.
短句来源
    In this paper, the mass spectra of petrol vapor using the precursors of the H3O + , NO+ and the quantitative analysis results of the compounds in the petrol and diesel vapors are also presented.
    文中还给出了以H3O+、NO+为初始离子所得到的汽油蒸汽的质谱图,以及汽油、柴油蒸汽中各种成分的定量分析结果。
短句来源
    Qualitative Analysis of Light Component of Splitting Decomposition Petrol Using Kovats Retention Indices
    保留指数定性分析裂解汽油轻组分
短句来源
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  “汽油”译为未确定词的双语例句
    THE OSCILLATION BEHAVIOR IN THE METHANOL-TOGASOLINE REACTION SYSTEM OVER H-ZSM-5 ZEOLITE CATALYST
    甲醇在H-ZSM-5沸石催化剂上转化成汽油时反应系统的振荡行为
短句来源
    Improvement of Simulant Distillation (ASTM D-2887) and Correlation with Chinese Standard Method
    汽油色谱模拟蒸馏ASTM D-2887的改进以及我国标准蒸馏方法数据的关联
短句来源
    Study on Modified ZSM-5 Zeolites as Catalyst for Methanol Conversion to Hydrocarbon
    改性ZSM-5分子筛作为甲醇合成汽油催化剂的研究
短句来源
    Spectrophotometric Determination of Cobalt With 1-(2-Pyridylazo)-2-naphthol in Microemulsion Media
    微乳液增稳1-(2-吡啶偶氮)-2-萘酚光度法测定汽油中痕量抗静电剂环烷酸钴
短句来源
    Determination of Ethers and Methanol in Etherified Gasolin by Beckman Vector Quantitative Method
    Beckman红外向量定量分析法测定醚化汽油中的醚醇含量
短句来源
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  gasoline
Study on reformulation of fluid catalytic cracking gasoline and increasing production of light olefins
      
The experimental results showed that FCC gasoline was obviously reformulated under appropriate reaction conditions.
      
The olefins (olefins with C atom number above 4) content of FCC gasoline was markedly reduced, and the aromatics content and octane number were increased.
      
The upgraded gasoline met the new standard of gasoline, and meanwhile, higher yields of light olefins were obtained.
      
Furthermore, higher reaction temperature, higher mass ratio of catalyst to oil, higher mass ratio of water to oil, and lower space velocity were found to be beneficial to FCC gasoline reformulation and light olefins production.
      
更多          
  petrol
Modern state of the catalytic reforming of petrol fractions.
      
Diagnostic ratios indicated combustion of wood and coal, emissions from petrol and diesel engines, and dust resuspension as sources that predominantly contributed to the atmospheric PAH concentrations.
      
Characterization of on-road CO, HC and NO emissions for petrol vehicle fleet in China city
      
The alkene-rich petrol fraction from refinery fluid catalytic cracking (FCC) has been characterized by GC and GC-MS.
      
The proposed coating was applied for aromatic hydrocarbons determination in petrol station waste waters.
      
更多          
  (gasoline)
Study on reformulation of fluid catalytic cracking gasoline and increasing production of light olefins
      
The experimental results showed that FCC gasoline was obviously reformulated under appropriate reaction conditions.
      
The olefins (olefins with C atom number above 4) content of FCC gasoline was markedly reduced, and the aromatics content and octane number were increased.
      
The upgraded gasoline met the new standard of gasoline, and meanwhile, higher yields of light olefins were obtained.
      
Furthermore, higher reaction temperature, higher mass ratio of catalyst to oil, higher mass ratio of water to oil, and lower space velocity were found to be beneficial to FCC gasoline reformulation and light olefins production.
      
更多          


Fifty-two hydrocarbons were found in the analysis of a fraction of Yu-Men gasoline normally boiling between 85° and 125℃. In this analysis, an analytical method for straightrun gasoline hydrocarbons composed of adsorption catalytical dehydrogenation and fractional distillation processes and Raman spectrometric examination was employed. The aromatic content of the fraction investigated was found to be 5.8% and consisting mainly of toluene. Cyclohexanes presented predominantly in naphthenes, in which 12.4% of...

Fifty-two hydrocarbons were found in the analysis of a fraction of Yu-Men gasoline normally boiling between 85° and 125℃. In this analysis, an analytical method for straightrun gasoline hydrocarbons composed of adsorption catalytical dehydrogenation and fractional distillation processes and Raman spectrometric examination was employed. The aromatic content of the fraction investigated was found to be 5.8% and consisting mainly of toluene. Cyclohexanes presented predominantly in naphthenes, in which 12.4% of methylcyclohexane and 7.6% of 1,3-dimethylcyclohexane by weight of the fraction were found; cyclopentanes identified were composed principally of di- and trimethylcyclopentanes. The contents of n-paraffins and isoparaffins were found to be about the same, the most abundant paraffin found was n-heptane, which accounted for 11.4% by weight of the fraction, and followed by n-octane, 5.5%.

用分析直餾汽油單體烴的綜合分析法分析了玉門汽油85~125℃餾分。共發現有52個單體烴。其中芳烴含量為5.8%,主要為甲苯。環烷烴中以環己烷類佔優勢,對原料油計,甲基環己烷佔12.4%,1,3-二甲基環己烷佔7.6%;環戊烷以二甲基及三甲基環戊烷為主。烷烴中的正烷烴和異構烷烴含量很相近,其中正庚烷最多,佔原料油的11.4%,正辛烷佔5.5%。

A rapid and accurate gas chromatographic method using two separate columns, which may be applied to gasoline analysis for components containing from five to seven carbon atoms, is described. Twenty-three peak maxima have been obtained on column packed with ester of pentaerythritol on firebrick, and twenty-one peak maxima on column of chloronaphthalene on firebrick. Combining the results from above two columns can determine quantitatively the individual components of the twenty-eight hydrocarbons (C_5—C_7) boiling...

A rapid and accurate gas chromatographic method using two separate columns, which may be applied to gasoline analysis for components containing from five to seven carbon atoms, is described. Twenty-three peak maxima have been obtained on column packed with ester of pentaerythritol on firebrick, and twenty-one peak maxima on column of chloronaphthalene on firebrick. Combining the results from above two columns can determine quantitatively the individual components of the twenty-eight hydrocarbons (C_5—C_7) boiling below 102℃. The retention time and retention volume data for these twenty-eight compounds on both columns are listed. The precision and accuracy of the method are good. The time for a complete analysis is about four hours.

介绍了测定汽油中C_5—C_7馏分的28个单体烃的气液色谱方法.在最佳的操作条件下,用季戊四醇酯的色谱柱得到了23个色谱峯;用氯萘的色谱柱得到了21个色谱峯.综合两色谱柱所得结果,就可以得到28个单体烃的含量.文中列出了各单体烃在两柱上的相对保留时间及保留体积值,保留体积的对数值与碳原子数呈线性关系.用配制的已知组成试样验证本方法的绝对误差在1%左右,对直馏汽油及石油二次加工汽油平行测定差值为1%.文中还讨论了柱温对分离的影响及不同极性固定液的选择性.试验是在自制的气液色谱仪上进行的,采用热敏电阻热导池作鉴定器.本方法分析一个试样约需4小时.

1,3-Pentadiene prepared from acetylacetone in our laboratory contained 91.7% trans and 8.3% cis-isomers. Homopolymerization of 1,3-pentadiene and its copoly-merization with butadiene were carried out with heterogeneous catalysts prepared from NdCl3-C2H5OH-Al(C2H5)3 in hydrocarbon solvent. The results obtained showed that only trans-isomer of 1,3-pentadiene can be polymerized with these catalyst to high molecular weight polymer with high conversion. The structure of the polypen-tadiene has been examined by IR,...

1,3-Pentadiene prepared from acetylacetone in our laboratory contained 91.7% trans and 8.3% cis-isomers. Homopolymerization of 1,3-pentadiene and its copoly-merization with butadiene were carried out with heterogeneous catalysts prepared from NdCl3-C2H5OH-Al(C2H5)3 in hydrocarbon solvent. The results obtained showed that only trans-isomer of 1,3-pentadiene can be polymerized with these catalyst to high molecular weight polymer with high conversion. The structure of the polypen-tadiene has been examined by IR, NMB and X-ray spectra. It was found that the polymer contains predominantly cis-1,4-unit with isotactic configuration and exhibits crystallinity. The data obtained by IB and dynamic mechanical method indicated that the product of copolymerization by above mentioned catalyst system is a random copolymer.

以乙酰基丙酮为原料合成戊二烯-1,3,其中含有91.7%反式和8.3%顺式异构体,用NdCl_3-C_2H_5OH-Al(C_2H_5)_3催化剂,加氢汽油为溶剂研究了戊二烯-1,3的均聚及其与丁二烯的共聚合,结果表明只有反式异构体能聚合成高分子量的聚合物,用IR、NMR和X射线光谱研究了均聚物的结构,发现是顺-1,4全同构型并表现有结晶,用IR和动态力学方法证明共聚合产物是共聚物。

 
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