本論文由三部分組成,在第一部分中,我們合成負(fù)載Pd納米顆粒的氫氧化釓Gd（OH）3納米棒上,并將該催化劑應(yīng)用于加氫反應(yīng)。我們先通過水熱反應(yīng)制備了 Gd（OH）3納米棒,然后通過光化學(xué)沉積方法獲得含有0.95wt%Pd的復(fù)合催化劑Pd/Gd（OH）3。Gd（OH）3具有大量羥基,是Pd納米顆粒的理想載體。我們使用該催化劑對硝基苯酚（4-NP）,對氨基苯酚（4-AP）和苯乙烯進行催化加氫實驗。結(jié)果表明,本實驗制備的Pd/Gd（OH）3催化劑與其它非均相催化劑相比,具有非常更為出色的催化活性。我們通過實驗結(jié)果計算出4-NP的還原速率為0.047s-1,在連續(xù)10個循環(huán)實驗后,該催化劑仍然表現(xiàn)出很高的活性。此外,我們利用Pd/Gd（OH）3納米棒對苯乙烯進行加氫實驗,生成乙苯的轉(zhuǎn)換效率（TOF）高達6159h-1,選擇性為100%,并且進行5個連續(xù)循環(huán)并沒有發(fā)現(xiàn)明顯的失活現(xiàn)象。實驗結(jié)果表明,金屬與載體相互作用,以及Pd納米顆粒在Gd（OH）3表面上的高度分散兩種因素的協(xié)同作用增強了催化劑的催化活性。我們合成的Pd/Gd（OH）3在多相催化中為探索其他金屬氫氧化物或氧化物作為高效有機反應(yīng)催化劑提... 

【文章來源】：中國科學(xué)技術(shù)大學(xué)安徽省 211工程院校 985工程院校

【文章頁數(shù)】：106 頁

【學(xué)位級別】：博士

【文章目錄】：
摘要
Abstract
Chapter 1 Introduction
    1.1 Introduction
    1.2 Literature review
    1.3 Objectives
    1.4 Thesis Outline
    1.5 References
Chapter 2 Highly Dispersed Ultra-Small Pd Nanoparticles on Gadolinium Hydroxide Nanorodsfor Efficient Hydrogenation Reactions
    2.1 Introduction
    2.2 Experimental Details
        2.2.1 Chemicals
        2.2.2 Synthesis of Gd(OH)_3 Nanorods
        2.2.3 Synthesis of ultra-small Pd nanoparticles supported on Gd(OH)3 nanorods
        2.2.4 Characterization
        2.2.5 Catalytic Reduction of 4-Nitrophenol
        2.2.6 Hydrogenation of styrene
    2.3 Results and discussion
    2.4 Summary
    2.5 References
Chapter 3 Metal-acid nanoplates-supported ultrafine Ru nanoclusters for efficient catalyticfractionation of lignin into aromatic alcohols
    3.1 Introduction
    3.2 Experimental Details
        3.2.1 Chemicals and Materials
        3.2.2 Preparation of α-HfP nanoplates
        3.2.3 Fabrication of Ru/α-HfP nanocomposite
        3.2.4 Characterization
        3.2.5 Catalytic reductive fractionation of lignocellulose
    3.3 Results and Discussion
    3.4 Summary
    3.5 References
Chapter 4. Facile one-pot incorporation of Co~Ⅱ based 2D MOF and its efficiency for CO_2 captureand conversion to cyclic carbonates under solvent-free conditions
    4.1 Introduction
    4.2 Experimental Details
        4.2.1 Chemicals
        4.2.2 Preparation of Co-MOF nanosheets
        4.2.3 Characterization
        4.2.4 Catalytic cycloaddition of CO_2 with epoxides
    4.3 Results and discussion
    4.4 Summary
    4.5 References
Acknowledgements
List of Publications



本文編號：3337467