矽鋁質廢資材合成胺官能基表面嫁接Al-MCM-41及環境調濕性能之研究

本研究利用石材污泥及LED廢棄石英砂為基材，經由鹼熔法以NaOH做為鹼劑，以鹼熔溫度450℃及鹼劑添加量為1.25之比例進行鹼熔獲得鹼熔產物，接著以液固比為5之配比進行陳化萃取矽酸鹽源及矽鋁酸鈉作為前驅液。再透過添加界面活性劑後以水熱法合成製備中孔Al-MCM-41擔體，並應用於迴流嫁接實驗，添加不同氨官能基濃度（2.5、5.0、7.5 vol. %），藉由迴流溫度為120℃下迴流12小時得以獲得胺官能基表面嫁接Al-MCM-41材料。並利用XRF、XRD、TEM、BET及EA元素分析等精密儀器進行巨微觀分析。XRD分析結果顯示，胺官能基表面嫁接Al-MCM-41材料位於d_(（100）)及d_(（110）)具有Al-MCM-41之特徵峰，其孔洞為有序性排列。由TEM結果顯示胺官能基嫁接Al-MCM-41材料其結構保持有序，且平均孔直徑為10.71 nm-15.48 nm。胺官能基表面嫁接Al-MCM-41其48小時連續吸放濕之吸濕量於第12小時之吸濕量介於40.46- 63.36 g/m^2之間，皆符合JIS A 1470之調濕建材規範第一級標準（>29 g/m^2）。胺官能基表面嫁接Al-MCM-41之最高平衡含水率為26.5 kg/kg，顯示材料皆符合日本工業規範調濕建材之平衡含水率規範（＞5 m^3/m^3）。本研究利用石材污泥及LED廢棄石英砂合成Al-MCM-41材料，透過表面嫁接不同胺官能基優化Al-MCM-41材料，能有效彌補機械式除濕器因高耗能、高成本之不足，具開發為新型調濕材料之潛力。

關鍵字

LED廢棄石英砂；石材污泥； Al-MCM-41 ；表面嫁接；調濕材料

並列摘要

In this study, stone sludge and LED waste quartz sand were used as substrates, and NaOH was used as alkali agent by alkali fusion method, and the alkali fusion temperature was 450°C and the ratio of alkali agent addition was 1.25 to obtain alkali fusion products. Then the aging extraction of the silicate source and sodium aluminosilicate as the precursor is carried out with a liquid-solid ratio of 5. After adding a surfactant, the mesoporous Al-MCM-41 support was synthesized by a hydrothermal method, and applied to the reflux grafting experiment, adding different concentrations of ammonia functional groups (2.5, 5.0, 7.5 vol. %), by reflux at 120°C for 12 h to obtain Al-MCM-41 material grafted on the surface of amine functional group. And use precision instruments such as X-ray Fluorescence Spectrometer (XRF), X-ray Diffractometer (XRD), Transmission electron microscope (TEM) and elemental analysis (EA) for macro and micro analysis. The XRD analysis results show that the Al- MCM-41 material grafted on the surface of the amine functional group has the characteristic peaks of Al-MCM-41 at d_((100)) and d_((110)), and its pores are arranged in an orderly manner. The results of TEM showed that the structure of amine functional group grafted Al-MCM-41 material remained orderly, and the average pore diameter was 10.71 nm-15.48 nm. The amine functional group grafted Al-MCM-41 material has a 48 h continuous moisture adsorption and desorption at the best moisture adsorption capacity is between 40.46-63.36 g/m^2 (24^(th) hour). The highest equilibrium moisture content of amine functional group grafted Al-MCM-41 material is 26.5 kg/kg. It was found that the amine functional group grafted Al-MCM-41 material was conformed to the Japanese Industrial Standards for the moisture adsorption (>29 g/m^2) and the equilibrium humidity control capacity (>5 m^3/m^3) of the humidity-conditioning building materials standards according to the relevant humidity control tests of JIS A 1470 and JIS A 1475. This research uses stone sludge and LED waste quartz sand to synthesize Al-MCM-41 material, which can effectively make up for the shortcomings of high energy consumption and high cost of mechanical dehumidifiers. Therefore, this material has the potential to be developed as a new type of humidity control material.

並列關鍵字

LED waste quartz sand ； stone sludge ； Al-MCM-41 ； alkali fusion ； surface modification ； amine functional group grafted

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