本文選題：鐵葉綠酸金屬鹽 + 結構��； 參考：《華北理工大學》2017年碩士論文

【摘要】：葉綠素衍生物種類繁多,應用廣泛。目前可以普遍生產(chǎn)制備的有銅葉綠酸鈉、鐵葉綠酸鈉、鋅葉綠酸鈉等。將鐵葉綠酸鈉作為反應物,使其與金屬離子反應,生成難溶性鐵葉綠酸金屬鹽。研究反應過程中的速率常數(shù)及表觀活化能,測定難溶性鐵葉綠酸金屬鹽的平衡常數(shù)。利用儀器分析手段研究難溶鹽的結構,拓寬葉綠素衍生物的種類及應用范圍。電導法測定了鐵葉綠酸鎂、鈣、鍶、錳、鈷、鎳、鋅、鋁、鉻的反應速率常數(shù)、表觀活化能。25℃時,其反應速率常數(shù)在0.1084 s-1~0.1951 s-1之間,它們均屬于一級反應,且都是復分解反應;表觀活化能在19.50~33.24 k J/mol之間。九種鐵葉綠酸金屬鹽均屬于速率很快的反應。通過IR、FTMS和TG聯(lián)合分析鐵葉綠酸金屬鹽的結構。確定鐵葉綠酸鉻的平均相對分子質(zhì)量為2002.92,分子式為鐵葉綠酸鉻a鹽:(C_(34)H_(30)O_5N_4Fe)_3Cr_2,鐵葉綠酸鉻b鹽:(C_(34)H_(28)O_6N_4Fe)_3Cr_2。高分辨質(zhì)譜正離子模式[M~+Na]~+下,確定了脫鎂葉綠酸鈣平均相對分子質(zhì)量為1259.40,脫鎂葉綠酸鈣a、b分子式分別為:(C_(34)H_(32)O_5N_4)_2Ca_2Na、(C_(34)H_(30)O_6N_4)_2Ca_2Na。M~(3+)與鐵葉綠酸鈉的結合比為2:3,M~(2+)與鐵葉綠酸鈉的結合比為1:1。分光光度法為研究手段,獲得鐵葉綠酸鈣、鎂、鍶、鈷、錳、鎳、鋅、鋁以及鉻的溶度積常數(shù),并比較了同一類型鐵葉綠酸金屬鹽的溶解度。采用等摩爾連續(xù)變化法和摩爾比法測定出葉綠酸-Fe~(~(2+))配位摩爾比npheo:n Fe為1:1,K穩(wěn)為3.8763×10~6,對兩種方法評估的結果:相對平均偏差為1.79%,考慮誤差來源,認為兩種方法無顯著性差異。
[Abstract]:There are many kinds of chlorophyll derivatives and they are widely used. At present, it can be widely used to produce sodium copperchloric acid, sodium ferrochloric acid, sodium zinc folate and so on. Sodium iron leaf green acid was used as reactant to react with metal ion to form insoluble metal salt of iron leaf green acid. The rate constant and apparent activation energy during the reaction were studied, and the equilibrium constants of insoluble iron chloric acid metal salts were determined. The structure of insoluble salt was studied by means of instrumental analysis, and the variety and application of chlorophyll derivatives were broadened. The reaction rate constants of magnesium, calcium, strontium, manganese, cobalt, nickel, zinc, aluminum and chromium were determined by conductance method. The reaction rate constants of mg, Ca, Sr, mn, Co, Ni, Zn, Al and Cr were in the range of 0.1084 s ~ (-1) 0.1951 s ~ (-1) when the apparent activation energy was .25 鈩，

本文編號：2061804