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研究生:盧寧方
研究生(外文):Ning-Fang Lu
論文名稱:製備含鈷銅/鈷鎳金屬奈米顆粒於具官能基三維結構中孔洞材料之催化應用
指導教授:高憲明
指導教授(外文):Hsien-Ming Kao
學位類別:碩士
校院名稱:國立中央大學
系所名稱:化學學系
學門:自然科學學門
學類:化學學類
論文種類:學術論文
論文出版年:2018
畢業學年度:106
語文別:英文
論文頁數:169
中文關鍵詞:對硝基苯酚硼烷氨
外文關鍵詞:4-nitrophenolammonia-borane
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本論文分為三個部分,在第一部分將具羧酸官能化且擴孔的中孔洞二氧化矽SBA-16,簡稱為LP-S16C-x,x = [CES/(CES+TEOS)]。將LP-S16C-x含浸於鈷銅金屬離子前驅液,利用熱還原法將金屬離子還原成金屬奈米顆粒(CoyCu10-y-LP-S16C-x-TD)。含浸的過程中,在鹼性環境下 (pH = 9) ,中孔洞表面上的羧酸官能基團(-COOH)去質子化形成負離子(-COO-),因此有靜電作用力,能夠有效地吸引金屬離子進入孔洞中,成功還原鈷銅奈米金屬顆粒在此中孔洞材料,其金屬顆粒尺寸為5 - 7 nm之間。將材料應用於4-Nitrophenol還原催化反應之觸媒,Co2Cu8-LP-S16C-20表現最佳的催化效果,其活性參數為1519.5 s-1gmetal-1。
在第二部分中,將LP-S16C-20含浸於鈷銅離子前驅液,利用化學還原法將金屬離子還原成金屬奈米顆粒 (CoyCu10-y-LP-S16C-20),其金屬顆粒大小為2 - 4 nm之間。將材料使用於硼烷氨水解製氫的反應中,比起單金屬材料,具有鈷銅金屬的材料表現了較佳的催化活性,當鈷銅比例為4:6 (Co4Cu6-LP-S16C-20),表現最好的催化效果,其在反應中的轉換率為16.36 H2 mol/metal mol•min、活化能為38.10 kJ/mol。
第三部分將LP-S16C-20含浸於鈷鎳離子前驅液,利用化學還原法還原金屬 (CoyNi10-y-LP-S16C-20),金屬的顆粒大小約為2 – 7 nm,將具有金屬之中孔洞材料進行硼烷氨水解製氫反應,發現具有鈷鎳金屬的材料表現較佳的催化活性,Co6Ni4-LP-S16C-20的轉換率為18.95 H2 mol/metal mol•min、活化能為36.43 kJ/mol。結果顯示含奈米金屬之中孔洞材料有效提升硼烷氨水解反應的反應速率。
In first project, we report that the bimetallic cobalt-copper alloy nanoparticles with a particle size about 5.3 nm are successfully supported in the cage-type mesopores of large pore SBA-16 mesoporous silica (sample denoted as CoyCu10-y-LP-S16C-x-TD) functionalized with carboxylic acids (–COOH) groups. During the impregnation of metal solutions ,the –COOH groups on the surface of cage-type mesopore deprotonate under the alkaline condition (pH=9) and become negatively charged, with efficiently interact with Co2+/Cu2+ cations and allow facile fabrication of Co-Cu alloy nanoparticles. The CoyCu10-y-LP-S16C-x-TD catalyst exhibits a high catalytic activity with the activity parameter of 1519.5 (s-1gmetal-1) when it was used as the catalyst for the reduction of 4-nitrophenol.

In second project, non-noble bimetallic CoyCu10-y nanoparticles were successfully supported on the LP-S16C-20 (CoyCu10-y-LP-S16C-20-DD) by using chemical reduction with aqueous solution of NaBH4 and NH3BH3. While the cost-effective CoyCu10-y (2 - 4nm) was used for the hydrolysis of ammonia borane, the Co4Cu6-LP-S16C-20-DD showed high catalytic properties with turnover frequency of 16.36 H2 mol/metal mol•min and activation energy of 38.10 kJ/mol. The synergistic effect between Co and Cu species plays an important role for the improved performance in the catalytic hydrolysis of ammonia borane.

In third project, we report on the synthesis of CoyNi10-y nanoparticles supported on LP-S16C-20 and their catalytic activities for the hydrolytic dehydrogenation of ammonia borane. The catalysts of CoyNi10-y-LP-S16C-x-DD have been prepared by chemical reduction with aqueous solution of NaBH4 and NH3BH3. Compared with their monometallic counterparts, the bimetallic CoNi alloy NPs (2-7 nm) present higher catalytic activity for hydrolytic dehydrogenation of ammonia borane. The Co6Ni4-LP-S16C-20-DD nanocatalyst showed high catalytic properties with turnover frequency of 18.95 H2 mol/metal mol•min and activation energy of 36.43 kJ/mol. Alloying Co with Ni provides a required synergistic effect on the catalysis in the catalytic hydrolytic dehydrogenation of ammonia borane.
中文摘要 i
Abstract iii
謝誌 v
目錄 vi
圖目錄 xi
表目錄 xix
第一章 序論 1
1-1中孔洞二氧化矽材料 1
1-1-1中孔洞材料 1
1-2界面活性劑之簡介 4
1-2-1界面活性劑的種類 5
1-2-2微胞的形成 7
1-2-3 界面活性劑與矽氧化物的相互作用 8
1-3官能基化之中孔洞材料 10
1-4 文獻回顧 12
1-4-1 中孔洞材料SBA-16之合成與介紹 12
1-4-2 具羧酸官能基之中孔洞材料 14
1-4-3 中孔洞材料吸附金屬之相關研究 20
1-4-4 金屬奈米顆粒對4-Nitrophenol催化還原反應之文獻 25
1-4-5 硼烷氨水解製氫之文獻 32
1-5 研究動機及目的 36
第二章 實驗部分 38
2-1 實驗藥品 38
2-2 實驗步驟 40
2-2-1具羧酸官能基且擴孔的中孔洞矽材SBA-16之合成 40
2-2-2以鍛燒或硫酸溶液去除孔洞中的模板 41
2-2-3 LP-S16C-x 吸附鈷/銅/鎳離子製備奈米金屬 42
2-2-3.1 利用熱還原法還原鈷銅離子製備鈷銅奈米金屬(CoyCu10-y-LPS16C-x-TD) 42
2-2-3.2 利用雙還原劑進行化學還原法還原鈷銅離子製備鈷銅奈米金屬 (CoyCu10-y-LP-S16C-x-DD) 43
2-2-3.3 利用雙還原劑進行化學還原法還原鈷鎳離子製備鈷鎳奈米金屬 (CoyNi10-y-LP-S16C-x-DD) 44
2-2-4 材料對4-Nitrophenol進行催化還原反應 45
2-2-4.1 4-Nitrophenol之降解反應 45
2-2-4.2 材料回收之重複使用實驗 45
2-2-5 材料對硼烷氨進行催化水解產氫之反應 47
2-2-5.1 硼烷氨水解產氫實驗 47
2-2-5.2 材料回收之重複使用實驗 49
2-3 實驗設備 50
2-3-1 實驗合成設備 50
2-3-2 實驗鑑定儀器 50
第三章 結果與討論 52
3-1 CoCu-LP-S16C-x-TD材料系列 52
3-1-1 基本性質鑑定 52
3-1-1.1 SAXRD 繞射圖譜 52
3-1-1.2 WAXRD 繞射圖譜 55
3-1-1.3 13C CP/MAS NMR 57
3-1-1.4 等溫氮氣吸脫附 58
3-1-1.5 SEM影像 63
3-1-1.6 TEM影像 65
3-1-1.7 ICP-MS結果 68
3-1-2 LP-S16C-x 吸附金屬之4-Nitrophenol催化還原反應 69
3-1-2.1 CoyCu10-y-LP-S16C-0-TD對4-Nitrophenol催化還原反應之結果 71
3-1-2.2 CoyCu10-y-LP-S16C-20-TD對4-Nitrophenol催化還原反應之結果 78
3-1-2.3 Co2Cu8-LP-S16C-20-TD回收重複使用性 83
3-2 CoCu-LP-S16C-x-DD材料系列 85
3-2-1 基本性質鑑定 85
3-2-1.1 SAXRD 繞射圖譜 85
3-2-1.2 WAXRD 繞射圖譜 87
3-2-1.3 等溫氮氣吸脫附 88
3-2-1.4 SEM影像 90
3-2-1.5 TEM影像 91
3-2-1.6 ICP-MS結果 97
3-2-1.7 磁性鑑定 98
3-2-2 LP-S16C-x 吸附金屬之硼烷氨水解產氫反應 100
3-2-2.1 以熱還原法還原金屬之催化活性 101
3-2-2.2 以化學還原法還原不同鈷銅金屬比例之催化活性 102
3-2-2.3 含浸不同濃度金屬前驅液之催化活性 104
3-2-2.4 Co4Cu6-LP-S16C-20-DD之動力學探討 106
3-2-2.5 Co4Cu6-LP-S16C-20-DD之回收利用 110
3-3 CoNi-LP-S16C-x-DD材料系列 113
3-3-1 基本性質鑑定 113
3-3-1.1 SAXRD 繞射圖譜 113
3-3-1.2 WAXRD 繞射圖譜 115
3-3-1.3 等溫氮氣吸脫附 116
3-3-1.4 SEM影像 118
3-3-1.5 TEM 影像 119
3-3-1.6 ICP-MS結果 123
3-3-1.7 磁性鑑定 124
3-3-2 LP-S16C-x 吸附金屬之硼烷氨水解產氫反應 125
3-3-2.1以不同的鈷鎳金屬比例比較其催化活性 126
3-3-2.2 Co6Ni4-LPS16C-20-DD之動力學探討 128
3-3-2.3 Co6Ni4-LP-S16C-20-DD之回收利用 132
第四章 結論 136
第五章 參考文獻 137
第六章 附錄 144
6-1 實驗步驟 144
6-1-1 材料CoCu-LP-S16C-20對糠醛之氫化反應 144
6-2 實驗結果 144
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