【正文】 似乎 并沒有明顯 的不同 ， 但是注意觀察可以發(fā) 現(xiàn)，在 390左右的地方從（不燒時）沒有峰變出了一個明顯的峰出來（燒 500℃ ），而 430 左右的小峰隨之消失。 10 20 30 40 50 60 70 2 Th e t a ( d e g )101112200103211004220204312 303321224400Intensity(CPS)105abcde 圖 39 煅燒溫度的影響 （ a不燒 b燒 200℃ c燒 300℃ d燒 400℃ e燒 500℃） 16 4 催化酯化率的測定及對結(jié)果的討論 實驗儀器和試劑 三 口 燒瓶，恒溫電熱套， 恒壓滴液漏斗 ，回流冷凝器，天平，容量瓶，量筒，錐形瓶，移液管。 圖 4 2 酯化反應(yīng)裝置 1恒溫電熱套； 2溫度計； 3吸水劑； 4冷凝器； 5玻璃塞； 6恒壓滴液漏斗； 7三 口 燒瓶 . 冷凝水冷凝水3452176 17 . 實驗過程 （ 1）催化劑的準(zhǔn)備 將 前面 制備的納米結(jié)構(gòu)錳氧化物在 100℃下烘 干 2h備用。最后用一定量無水乙醇洗滌分水器，取樣滴定。如果沒有催化劑存在 （ 空白 ） ，酯化率很低。 圖 酯化率與煅燒溫度間的關(guān)系 020406080100 500℃酯化率/% 溫度未燒 200℃ 300℃ 400℃ 19 5 結(jié)論與展望 本文全面系統(tǒng)地介紹了納米催化材料的特點，及其在 主要的制備方法 、有機 合成領(lǐng)域的應(yīng)用研究現(xiàn)狀。 利用 醋酸鋅（ Zn(Ac)2 同時也利用水熱法制得了α MnO2 納米線，對比了各種不同錳的氧化物的物理化學(xué)性質(zhì)。在相同反應(yīng)條件下，它催化異戊醇的酯化率明顯高于以 MnO2 納米棒、 λ MnO2 納米顆粒 和 Mn3O4 納米粒子作為催化劑時的 酯化率（ 催化 乙酸異戊酯 合成反應(yīng)的最佳工藝條件為：酸醇摩爾比為 :1，催化劑量為反應(yīng)物質(zhì)量的 %，反應(yīng)時間為 210 min）。另外，本次論文得到了本實驗室 的師兄，師姐及 各位同學(xué)的 無私 幫助 ， 借此機會一并向他們表示感謝 ！ 21 參考文獻 [1] 許并社 .納米材料及應(yīng)用技術(shù) [M].化學(xué)工業(yè)出版社 ,. [2] Ahmadi T S,Wang Z L,Green T C[J]. Science. 1996. 272. [3] Narayanan R, ElSayed A.[J] Nano. Lett., . [4] Narayanan R, ElSayed A. [J]. J. Phys Chem B, . [5] 張 全勤 ,張繼文 .納米技術(shù)新進展 [M].國防工業(yè)出版社 ,. [6] 閻子峰 .納米催化技術(shù) [M].化學(xué)工業(yè)出版社 ,. [7] Zhang W X, Yang Z H, Liu Y. [J] J Cryst Growth, 2022, 263:394. [8] Hong X L, Zhang G Y, Zhu Y Y[J]. Mater Res Bull, 2022, 38: 1695. [9] Hill L I, Verbaere A, Guyomard D.[J]. J. Power Sources, 2022, 119121: 226. [10] 王占國 . 納米半導(dǎo)體材料的制備技術(shù) [J]. 微納電子技術(shù) , 2022(1): 914. [11] I. P. Parkin. Convenient, roomtemperature, amineassisted routes to metal sulfides, selenides and tellurides[J]. Chem. Soc. 1997, 19: 35053508. [12] 趙立志 . 納米材料的應(yīng)用 [J]. 天津化工 , 2022, 17(5): 39 41. [13] 何順愛，周雙喜等 .水熱沉淀法制備 ZnO納米粉體 [J].桂林工學(xué)院學(xué)報， 2022，24（ 1） : 8084. [14] 常照榮，劉院英等 .濕法制備納米二氧化錳及其電化學(xué)性能的研究 [J].河南師范大學(xué)學(xué)報 (自然科學(xué)版 )， 2022,34（ l） : 7779. [15] Jason P. Durand, Josanlet C. Villegas. Colloidal Manganese Oxide Precursor to Octahedral Layered,OL3 Materials[J]. Journal of Inanic and Organometallic Polymers and Materials, 2022, 17(2): 460. [16] Jijun Qiu , Zhengguo Jin, Zhifeng of TiO2 nanotube film by wellaligned ZnO nanorod array filmand sol– gel process[J]. Thin Solid Films 515 (2022) 2897– 2902. [17] 李海霞，李大光等 .納米復(fù)合氧化物催化劑研究進展 [J].無機鹽工業(yè)， 2022,36（ 4） : 12. 22 請您刪除一下內(nèi)容， O(∩ _∩ )O 謝謝?。?！ Many people have the same mixed feelings when planning a trip during Golden Week. With heaps of time, the sevenday Chinese National Day holiday could be the best occasion to enjoy a destination. However, it can also be the easiest way to ruin how you feel about a place and you may bee more fatigued after the holiday, due to battling the large crowds. During peak season, a dream about a place can turn to nightmare without careful planning, especially if you travel with children and older people. As most Chinese people will take the holiday to visit domestic tourist destinations, crowds and busy traffic are inevitable at most places. Also to be expected are increasing transport and acmodation prices, with the possibility that there will be no rooms available. It is also mon that you39。s misery, the cow told him to turn its hide into a pair of shoes after it died. The magic shoes whisked Niulang, who carried his two children in baskets strung from a shoulder pole, off on a chase after the empress. The pursuit enraged the empress, who took her hairpin and slashed it across the sky creating the Milky Way which separated husband from wife. But all was not lost as magpies, moved by their love and devotion, formed a bridge across the Milky Way to reunite the family. Even the Jade Emperor was touched, and allowed Niulang and Zhinu to meet once a year on the seventh night of the seventh month. This is how Qixi came to be. The festival can be traced back to the Han Dynasty (206 BCAD 220). Traditionally, people would look up at the sky and find a bright star in the constellation Aquila as well as the star Vega, which are identified as Niulang and Zhinu. The two stars shine on opposite sides of the Milky Way. Customs In bygone days, Qixi was not only a special day for lovers, but also for girls. It is also known as the Begging for Skills Festival or Daughters39。s Day! in shops, hotels and restaurants. But few young women will mark the festival with their boyfriends, or take part in traditional activities to pray for cleverness. 23