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尿素作为沉淀剂,采用均相沉淀技术制得Co~(2+)-Ni~(2+)-Al~(3+)-LDHs层状材料。以Co~(2+)-Ni~(2+)-Al~(3+)-LDHs作为前驱体,分别与NaCl、十二烷基磺酸钠[CH_3(CH_2)_(11)SO_3~-Na]进行离子交换反应分别制得Co~(2+)-Ni~(2+)-Al~(3+)-CH_3(CH_2)_(11)SO_3~--LDHs新型吸附剂材料,实现了将CH_3(CH_2)_(11)SO_3~-负载到Co~(2+)-Ni~(2+)-Al~(3+)-LDHs层状材料。研究表明Co~(2+)-Ni~(2+)-Al~(3+)-SDS~--LDHs为介孔材料,增强了类水滑石的亲油吸附性能,其比表面积为136.2m~2/g,平均孔径为18.3nm,在相对压强(P/P0)为1.0时,吸附量达到321cm~3/g,具有较好的吸附性能。
Urea was used as the precipitant, and the Co ~ (2 +) - Ni ~ (2 +) - Al ~ (3 +) - LDHs layered materials were prepared by homogeneous precipitation technique. In the presence of Co ~ (2 +) - Ni ~ (2 +) - Al ~ (3 +) - LDHs as precursors, sodium dodecyl sulfate [CH_3 (CH_2) _ (11) SO_3 ~ (2 +) - Ni ~ (2 +) - Al ~ (3 +) - CH_3 (CH_2) _ (11) SO_3 ~ --LDHs by ion exchange reaction, The CH_3 (CH_2) _ (11) SO_3 ~ - was loaded on the layer of Co ~ (2 +) - Ni ~ (2 +) - Al ~ (3 +) - LDHs. The results show that the Co ~ (2 +) - Ni ~ (2 +) - Al ~ (3 +) - SDS ~ - LDHs are mesoporous materials and enhance the lipophilic adsorption ability of hydrotalcite. ~ 2 / g, the average pore diameter was 18.3nm, and the adsorption capacity reached 321cm ~ 3 / g at the relative pressure (P / P0) of 1.0.