本研究嘗試將銅負載於不同形式的磷酸鋁(AlPO4) 載體，並測試其將過氧化氫與苯氧化為酚的活性，並與含銅之SBA-15 及微孔AlPO4 比較。觸媒載體由下列幾種方法製備，在SBA-15 中孔分子篩表面塗佈磷酸鋁(命名為Cx-AlPO4/SBA)；利用SBA-15 空間限制合成磷酸鋁(命名為Sx-AlPO4/SBA) 以及直接合成中孔磷酸鋁(命名為mesoAlPO4)，所有樣品皆以含浸法負載1 wt% 的銅。
所合成的觸媒以X-光繞射光譜(XRD)、氣體吸附儀(BET)、場發射穿透式電子顯微鏡(TEM)、氨氣程式升溫脫附裝置(NH3-TPD)、固態27Al魔角旋轉(MAS) 核磁共振儀(NMR) 及固態31P (MAS) NMR 鑑定其性質。所有以SBA-15 合成的觸媒載體均具有AlPO4 結構，觸媒的酸量以Sx-Cu/AlPO4/SBA 最高，同時高於Cx-Cu/AlPO4/SBA 及含量相近之Cu/mesoAlPO4。
觸媒的酚合成活性在液相中測試，以苯及過氧化氫為原料，乙腈為溶劑，乙腈主要目的是使其為均相反應，反應在60℃ 及1 atm 下進行，反應後的產物以氣相層析儀分析。實驗結果發現，各觸媒中以在SBA-15 塗佈兩次磷酸鋁為載體者活性最佳，且高於塗佈一次者，觸媒活性高低順序分別為：C2-Cu/AlPO4/SBA > Cu/mesoAlPO4 > C1-Cu/AlPO4/SBA >> Cu/AlPO4  Sx-Cu/AlPO4/SBA >> Cu/SBA-15。觸媒的壽命則以中孔磷酸鋁為載體者最佳，以在SBA-15 塗佈磷酸鋁為載體者次之，以空間限制法合成之磷酸鋁為載體者最差。與失活常數結果一致，本實驗指出其活性在於觸媒載體之磷酸鋁上的銅，不在於酸量。

The catalytic performances of various copper (Cu) supported on modified aluminophosphate (AlPO4) substrates during hydroxylation of benzene to phenol have been investigated. Modified catalyst supports prepared by different methods, namely by coating AlPO4 onto the surfaces of the mesoporous SBA-15 molecular sieve (denoted as Cx-AlPO4/SBA), by incorporating AlPO4 in the pore channels of SBA-15 (denoted as Sx-AlPO4/SBA), or by direct synthesis of mesoporous AlPO4 (denoted as mesoAlPO4) have been examined together with bare SBA-15 and traditional microporous AlPO4 (microAlPO4). Subsequently, ca. 1 wt% of Cu was loaded onto the respective supports by the impregnation method.
The physicochemical properties of various supported catalysts were characterized by a variety of analytical and spectroscopic techniques, viz. XRD, BET, TEM, NH3-TPD, and 27Al and 31P MAS NMR. The structures of AlPO4 as well as the SBA-15 were found to remain intact in the modified catalysts regardless of the methods invoked for the preparation of various catalyst supports. In terms of acid concentrations, the following trend was observed: Sx-Cu/AlPO4/SBA >> Cx-Cu/AlPO4/SBA  Cu/mesoAlPO4.
The catalytic activities of various catalysts for the production of phenol were tested under liquid phase using benzene and hydrogen peroxide as the reactants and acetonitrile as the solvent. The latter was introduced to warrant a homogeneous mixture of the reactants. Typically, the reaction was conducted at 60℃ under ambient pressure, and the products were analyzed by a gas chromatography equipped with a flame ionization detector (GC-FID). It was found that the catalyst prepared by duplicated AlPO4 coating (C2-Cu/AlPO4/SBA) exhibited a better activity than the catalyst support coated only once (C1-Cu/AlPO4/SBA). Moreover, the catalytic activities of various supported catalysts follow the following trend: C2-Cu/AlPO4/SBA > Cu/mesoAlPO4 > C1-Cu/AlPO4/SBA >> Cu/AlPO4  Sx-Cu/AlPO4/SBA >> Cu/SBA-15. Additional life tests revealed that the durability/stability of the modified catalysts followed the trend: Cu/mesoAlPO4 > Cx-Cu/AlPO4/SBA > Sx-Cu/AlPO4/SBA, which is in agreement with the observed trend in their respective deactivation constants. Thus, it is indicative that the activity of the supported Cu catalysts should be associated with the structures of the AlPO4-modified substrates rather than their acid concentrations.

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