本文選題：膦酸基團催化材料　切入點：響應(yīng)面分析　出處：《魯東大學(xué)》2015年碩士論文

【摘要】：隨著能源儲備的耗盡，石油價格的上漲以及人們對環(huán)境問題的關(guān)注程度加大，所以制備生物柴油就變成了一項緊迫的研究課題。生物柴油具有許多優(yōu)點：排放尾氣十分清潔，可再生，可降解，低毒，使用和儲存安全性高，可以以任意比例與石化能源混合使用。因為含膦酸基團的材料在制備生物柴油方面研究的比較少,本文重點研究了含膦酸基團改性催化材料的制備方法,以及膦酸改性催化材料在獲取生物柴油中的最佳催化條件。 1.以硅藻土、四氧化三鐵為基質(zhì)，分別制備了膦酸改性的硅藻土，膦酸改性的四氧化三鐵。研究了兩種催化材料在獲取生物柴油中的最佳催化條件。應(yīng)用響應(yīng)面軟件優(yōu)化出了催化劑量，醇與酸的摩爾之比和反應(yīng)采取溫度的最佳值。膦酸改性的硅藻土最佳優(yōu)化條件為催化劑量是10.32%，醇與酸的摩爾之比為10.3:1，反應(yīng)使用的溫度為87.8oC，此時，生物質(zhì)柴油產(chǎn)率是95.13%。膦酸改性的四氧化三鐵最佳優(yōu)化條件為催化劑量是9.58%，醇與酸的摩爾之比為8.7:1，反應(yīng)采取溫度為93.2oC，此時，生物質(zhì)柴油產(chǎn)率是92.91%。 2.首先研究了海藻酸鐵的制備方法，然后，以海藻酸鐵為基質(zhì)，制備了膦酸改性的海藻酸鐵。應(yīng)用響應(yīng)面軟件優(yōu)化出了催化劑量，醇與酸的摩爾之比和實驗采取的溫度的最佳值。發(fā)現(xiàn)溫度是影響反應(yīng)的最根本的因素，最佳條件：催化劑用量是9.53%，醇與酸的摩爾之比為8.62:1，反應(yīng)采取的溫度是91.0oC，此時，生物質(zhì)柴油產(chǎn)率是93.17%。 3.利用吸附法合成固化LVK酶，研究了固化LVK酶在生產(chǎn)生物柴油中的最佳催化條件。應(yīng)用響應(yīng)面軟件優(yōu)化出了催化劑量，醇與油的摩爾之比，反應(yīng)采用的溫度，水的含量，反應(yīng)采取的時間的最佳值。最佳優(yōu)化條件為催化劑采用量是22.15%，醇與油的摩爾比是4.45:1，反應(yīng)采用的溫度為44.2oC，水份含量值為7.45%，反應(yīng)得時間為12.96h。制取的生物柴油的產(chǎn)率是86.74%。
[Abstract]:With the depletion of energy reserves, the rise of oil prices and the increasing attention to environmental problems, the preparation of biodiesel has become an urgent research topic.Biodiesel has many advantages: exhaust gas is very clean, renewable, degradable, low toxicity, high safety in use and storage, and can be mixed with petrochemical energy in any proportion.Because there is little research on the preparation of biodiesel from phosphonic acid group materials, the preparation method of phosphonic acid group modified catalytic materials and the optimum catalytic conditions of phosphonic acid modified catalytic materials in obtaining biodiesel have been studied in this paper.1.Diatomite modified by phosphonic acid and iron trioxide modified by phosphonic acid were prepared by using diatomite and ferric oxide as substrate.The optimum catalytic conditions of two kinds of catalytic materials in obtaining biodiesel were studied.The amount of catalyst the molar ratio of alcohol to acid and the optimum reaction temperature were optimized by using response surface software.The optimum conditions of diatomite modified by phosphonic acid were as follows: the amount of catalyst was 10.32, the molar ratio of alcohol to acid was 10.3: 1, the reaction temperature was 87.8 OC, and the yield of biodiesel was 95.13%.The optimum conditions of phosphonic acid modified Fe _ 2O _ 3 were as follows: catalyst amount was 9.58, molar ratio of alcohol to acid was 8.7: 1, reaction temperature was 93.2 OC, and the yield of biodiesel was 92.91%.2.The preparation method of ferric alginate was studied firstly, and then the phosphonic acid modified iron alginate was prepared by using ferric alginate as substrate.The amount of catalyst the molar ratio of alcohol to acid and the optimum temperature of the experiment were optimized by using the response surface software.It was found that temperature was the most fundamental factor affecting the reaction. The optimum conditions were as follows: the amount of catalyst was 9.53, the molar ratio of alcohol to acid was 8.62: 1, the reaction temperature was 91.0 OC, and the yield of biodiesel was 93.17%.3.The optimum catalytic conditions of solidified LVK enzyme in biodiesel production were studied by using adsorption method.The optimum values of catalyst amount, molar ratio of alcohol to oil, reaction temperature, water content and reaction time were optimized by using response surface software.The optimum conditions are as follows: the amount of catalyst is 22.15%, the molar ratio of alcohol to oil is 4.45: 1, the reaction temperature is 44.2 OC, the water content is 7.45 and the reaction time is 12.96 h.The yield of biodiesel is 86.74.
【學(xué)位授予單位】：魯東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：O643.36;TE667

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本文編號：1720171