(江蘇大學 化學化工學院， 鎮(zhèn)江 212013)
摘 要: 以十六烷基三甲基溴化銨為模板劑， 以硅酸鈉、 氯化鎳、 氯化鈷等無機鹽為原料， 水熱法合成出含Ni介孔分子篩和含Co介孔分子篩。 采用XRD、 FT-IR、 TPR、 TEM和比表面積孔徑測定等方法對樣品進行表征。 結果表明： 合成了長程有序性好的含Ni和含Co介孔分子篩； 含Ni介孔分子篩的比表面積為753.3 m2/g， 平均孔徑為3.23 nm， 750 ℃焙燒3 h， 100 ℃水熱處理5 d介孔結構仍然存在； 含Co介孔分子篩的比表面積為744.1 m2/g， 平均孔徑為4.44 nm， 650 ℃焙燒后轉變?yōu)橄x蛀狀介孔結構， 750 ℃焙燒3 h后介孔有序性變得很差， 100 ℃水熱處理5 d后轉變?yōu)橄x蛀狀結構。
關鍵字: 含Ni介孔分子篩； 含Co介孔分子篩； 合成； 表征
（School of Chemistry and Chemical Engineering, Jiangsu University,
Zhenjiang 212013, China）
Abstract: Ni(or Co)-mesoporous molecular sieve was hydrothermally synthesized from inorganic salts as sodium silicate, nickel chloride and cobalt chloride as starting material by using cetyltrimeethyl ammonium bromide (CTAB) as the template. The samples were characterized by XRD, TEM, TPR, FT-IR and N2 physical adsorption. The results show that the long-range and well-ordered Ni(or Co)-mesoporous molecular sieve was synthesized. The as prepared Ni-mesoporous molecular sieve has a specific surface area of 753.3 m2/g and an average pore size of 3.23 nm. The pore structure of the as prepared Ni-mesoporous molecular sieve remains after calcination at 750 ℃ for 3 h or hydrothermal treatment at 100 ℃ for 5 d. The as prepared Co-mesoporous molecular sieve has a specific surface area of 744.1 m2/g and an average pore size of 4.44 nm. The as prepared Co-mesoporous molecular sieve is transformed into wormhole-like mesoporous structure after calcination at 650 ℃ or hydrothermal treatment at 100 ℃ for 5 d. The mesoporous structure of the as prepared Co-mesoporous molecular sieve is partially destroyed after calcination at 750 ℃ for 3 h.
Key words: Ni-mesoporous molecular sieve; Co-mesoporous molecular sieve; synthesis; characterization
