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poseidon_金蟲(chóng) (小有名氣)
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[交流]
求英文高手翻譯一段話(huà)
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三乙醇胺水溶液濃度對(duì)HNBR膠液中銠催化劑脫除的影響 (RhCl(PPh3)3中的銠為三配位、一價(jià),外層16個(gè)電子,得2個(gè)電子達(dá)到18電子的穩(wěn)定結(jié)構(gòu),HNBR分子結(jié)構(gòu)中含丙烯腈,由于—CN上的N原子可提供孤對(duì)電子正好與銠催化劑形成配位化合物,(RhCl(PPh3)3中的銠與HNBR分子鏈上的—CN有一定的配位作用而不易被脫除。三乙醇胺中的N在氧氣的作用下與銠空軌道的配位能力強(qiáng)于HNBR中的—CN,可以將銠從HNBR奪取過(guò)來(lái),三乙醇胺與銠配位形成的絡(luò)合物具有極性,極性決定了這種絡(luò)合物在水中要比在二甲苯中有更好的溶解性,因此極易溶于水,從而可以將(RhCl(PPh3)3從HNBR膠液中脫除到水相。脫除作用化學(xué)反應(yīng)式: 三乙醇胺同時(shí)作為絡(luò)合劑、萃取劑,其濃度對(duì)銠催化劑的脫除意義重大。 |

木蟲(chóng) (正式寫(xiě)手)
| HNBR triethanolamine aqueous solution by concentration on the removal of rhodium catalyst (RhCl (PPh3) 3 in the three coordinate rhodium, a price of 16 outer electrons have two E-stable structure up to 18 e, HNBR with the molecular structure of PAN, as the N-CN atoms can provide the lone pair electrons coincides with the formation of coordination compounds rhodium catalyst, (RhCl (PPh3) 3 in the Rh and HNBR molecular chain-CN coordination to a certain extent role not easily removed. triethanolamine N in the role of oxygen and rhodium coordination empty orbital is stronger than in the HNBR-CN, can win over rhodium from HNBR, triethanolamine and rhodium coordination network formed polar compounds, polar determine that this complex in water than in a better solubility in xylene, so easily soluble in water, which can be (RhCl (PPh3) 3 glue from HNBR the removal of the aqueous phase. Removal of the role of chemical reaction: triethanolamine as a complexing agent at the same time, extraction solvent, its concentration on the removal of rhodium catalyst is significant. |

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金蟲(chóng) (小有名氣)

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