| 1. | A novel method for palladium - catalyzed cyclotrimerization of alkynes in supercritical carbon dioxide ( scco2 ) has been developed 摘要研究了以超临界二氧化碳为反应介质溴化钯催化炔烃环三聚反应的新方法。 |
| 2. | This paper reviews recent progress in transition metal - catalyzed organic reactions using supercritical carbon dioxide as reaction media 摘要主要综述了近年来超临界二氧化碳作为反应介质过渡金属催化有机反庆的最新进展。 |
| 3. | Current studies on application of dense supercritical fluid as solvents for chemical and biochemical reactions are at the moment an interesting research topic 摘要近来以超临界流体作为反应介质是化学和生物化学反应研究的一个热点。 |
| 4. | The selectivity and activity of enzyme in the reaction media , especially in ionic liquids and supercritical liquids was reviewed in the paper 文章以溶剂分类,探讨溶剂,特别是引入新的反应介质离子液体和超临界流体对酶催化活性和选择性的影响。 |
| 5. | This review emphasizes some important aspects for the control of lipase enantioselectivity : medium engineering , substrate engineering , modification of enzyme and directed evolution 文章讨论了调控脂肪酶对映体选择性的几种方法:反应介质工程、底物分子工程、酶分子修饰和定向进化。 |
| 6. | The sulfur content of exfoliate graphite is harmful , while synthesized by chemical method with sulfuric acid . so it cannot be used in high - tech domains , such as nuclear power , aerospace and environment protection 其主要采用化学氧化法来制备可膨胀石墨,但由于大多采用硫酸作为反应介质,导致产物中较高的含硫量,使它在原子能、航空航天、环保等高新领域的应用受到限制。 |
| 7. | The research has been in progress to second step of characteristic and mechanism to hydr othermal preparing the powder aspect , and research has been in progress by pressure to in the experiment , time and the influence to the product capability of reaction medium 第二步对水热法制备粉体的特点和机理进行了探讨,对实验中的压力、时间、反应介质对产品性能的影响进行了研究。 |
| 8. | In order to enhance the efficiency of usage of lignocellulosic wastes and protect the balance of ecosystem , the liquefaction of lignocellulosic wastes was studied in this paper . lignocellulosic wastes and other chemicals were put into the reaction container and then liquefied 对纤维类废弃物在浓硫酸苯酚为催化剂、乙二醇为反应介质的热化学催化液化反应中,对其各反应物的用量比例、反应条件进行优化。 |
| 9. | However the binary catalysts system favors low residue content . it was found that the residue content were remained at a low level with ethylene glycol as the reaction media and 6 % ( by mass ) of sulfuric acid as the catalyst in the presence of phenol . the contents of lipophilic products were investigated 经凝胶色谱法测定表明,以浓硫酸苯酚为催化剂、乙二醇为反应介质的反应体系,所得到液化产物的平均相对分子质量最低, m _ w为806 , m _ n为799 。 |
| 10. | The process of in situ synthesis in salt activated by ma is discussed , and the separation of activation and reaction during ma is investigated . the ti - c mixtures with elevated system energy from mechanical activation occur due to thermal activation from in salt bath 在“机械激活盐浴合成”工艺中,将高放热体系在普通反应研磨工艺中所存在的孕育期与反应期分离,利用初始ti - c混粉在孕育期中所积累的储存能和高温熔盐反应介质所提供的热激活作用来促发粉体中的合成反应。 |