| 1. | Preparation and catalytic performance for polyethylene pyrolysis of al - mcm 41的制备及催化聚乙烯裂解反应 |
| 2. | The results provided theoretical basis for down - hole catalytic upgrading of heavy oil 探讨了催化剂对稠油水热裂解反应的催化机理。 |
| 3. | Heavy oil viscosity reduction of was studied by using toluene as additive for catalytic aquathermolysis reaction in this paper 摘要以钼酸铵作为稠油水热裂解反应的催化剂。 |
| 4. | The existing of poypropylene can raise the liquid fraction ratio , especially the light oil ratio , so it can fortify the effect of the cracking reaction of polyene to light oil 摘要在废旧聚烯烃的裂解反应中,聚丙烯的存在,可以提高轻油馏份的收率,增强反应的油化效果,本文称之为聚烯烃裂解反应的增强效应。 |
| 5. | The dvb / hpso and vpso / hpso with a mass ratio of 0 . 5 : 1 and 4 : 1 , respectively , have the highest ceramic yield ( 76 . 0 % and 74 . 6 % , respectively ) . the cured dvb / hpso and vpso / hpso are both colorless transparent hard solids 两个体系第二阶段的活化能分别为339 . 89kj / mol和484 . 76kj / mol ,都遵循抛物线法则,由一维扩散过程控制裂解反应。 |
| 6. | The results showed that hydrothermal cracking occurred while injecting steam , and the catalyst had catalytic activity for hydrothermal cracking of heavy oil at higher temperature ; viscosity and average molecular weight of heavy oil was thus lowered 实验结果表明,在注入蒸汽的条件下,辽河稠油可以发生水热裂解反应,高温下催化剂对水热裂解反应具有催化作用。 |
| 7. | A two - dimensional model is proposed for simulation of gas phase cracking of 1 , 2 - dichloroethane ( edc ) to produce vinyl chloride monomer ( vcm ) in tubular reactor furnace , in which side reaction of coke precursor formation is taken into consideration 摘要建立了二氯乙烷在管式反应器中进行气相热裂解的二维模型,模型考虑了二氯乙烷热解生成氯乙烯的主反应和生成焦前体的副反应以及气体密度变化对裂解反应的影响。 |
| 8. | So some methods suitable to large plasmid extraction , including lysis by sds and a method from a literature , were used to try to extract the large plasmid from the strain cell . the lysis reactions in these two methods are gentle , so the large plasmid cannot be injured in the lysis process , opposite to lysis by alkali . it would be helpful to keep the integrality of the large plasmid during the extraction 因此我们采用了适合于大质粒提取的sds法,和文献中应用于硝基苯降解性质粒的提取方法,来尝试对菌株细胞进行质粒提取,这两种方法裂解反应温和,不会像碱裂解法那样,在裂解过程中损坏质粒,可以实现质粒提取的完整性。 |
| 9. | Correspondingly , xrd patterns revealed that carbon shells became graphitic somehow . the effects of organic solvents and catalysts / catalysts precursors on the structure and morphology of products were also investigated in this study . cyclohexane , instead of benzene , was proven to be a suitable solvent , as it would not pyrolyze in the reaction system 对金属催化剂(或前体)以及有机溶剂与产物形貌关系的研究结果表明,苯作溶剂在反应条件下易裂解并形成积炭,从而阻碍了多孔碳产物的继续生成,而选用环己烷可以避免类似的裂解反应。 |