摘要
A new type of non-soluble copper aluminophosphate（denoted as CuAlPO） was synthesized by（static） hydrothermal crystallization and characterized by using several physicochemical techniques.XRD analysis reveals that CuAlPO can be obtained from a reactive gel of molar composition: iso-Pr2NH∶0.3CuO∶（0.7Al2O3∶）P2O5∶80H2O in a Teflon-lined stainless steel autoclave at 180 ℃ for 72 h and has the same crystal structure as that of hexagonal SiO2（JCPDS No.83-2299）.The sources of CuO,Al2O3 and P2O5 were copper sulfate pentahydrate,aluminum isopropoxide and o-phosphoric acid（mass fraction: 85%）,respectively.SEM shows a characteristic hexagonal morphology and a crystallite size of about 2 μm for both the as-synthesized CuAlPO and the calcined CuAlPO（550 ℃,6h）.Low specific surace area（2.0 m2/g） and pore volume（0.004 mL/g） of CuAlPO were observed by N2-adsorption measurement.Catalytic evaluation tests demonstrate that an excellent transformation of phenol into catechol and hydroquinone over the material was achieved in water under the benign reaction conditions with a phenol conversion of 29.5% being observed at room temperature（30 ℃）.
A new type of non-soluble copper aluminophosphate （denoted as CuA1PO） was synthesized by static hydrothermal crystallization and characterized by using several physicochemical techniques. XRD analysis reveals that CuAlPO can be obtained from a reactive gel of molar composition： iso-Pr2NH： 0. 3CuO： 0. 7Al2O3：P2O5：80H2O in a Teflon-lined stainless steel autoclave at 180℃ for 72 h and has the same crystal structure as that of hexagonal SiO2 （JCPDS No. 83-2299）. The sources of CuO, Al2O3 and P2O5 were copper sulfate pentahydrate, aluminum isopropoxide and o-phosphoric acid（ mass fraction： 85% ）, respectively. SEM shows a characteristic hexagonal morphology and a crystallite size of about 2μm for both the as-synthesized CuAlPO and the calcined CuA1PO （550℃, 6h ）. Low specific surace area （2. 0m^2/g ） and pore volume （0. 004 mL/g） of CuAlPO were observed by N2-adsorption measurement. Catalytic evaluation tests demonstrate that an excellent transformation of phenol into catechol and hydroquinone over the material was achieved in water under the benign reaction conditions with a phenol conversion of 29.5 % being observed at room temperature （ 30℃）.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第12期2357-2359,共3页
Chemical Journal of Chinese Universities
关键词
六方铜铝磷酸盐
苯酚催化羟化
过氧化氢
Hexagonal copper aluminophosphate
Phenol hydroxylation v/a catalysis
Hydrogen peroxide
