A poly(methyl acrylate)(PMA)/ZnAl layered double hydroxide(ZnAl-LDH) intercalation nanocomposite is synthesized by in situ polymerization of methyl acrylate with ogano-modified ZnAl-LDH(O-ZnAl-LDH). Its structure and ...A poly(methyl acrylate)(PMA)/ZnAl layered double hydroxide(ZnAl-LDH) intercalation nanocomposite is synthesized by in situ polymerization of methyl acrylate with ogano-modified ZnAl-LDH(O-ZnAl-LDH). Its structure and morphology are confirmed by X-ray diffraction(XRD) and transmission electron microscopy(TEM) image. The d 001 of O-ZnAl-LDH is expanded to 2.85 nm after polymerization from 2.63 nm, which indicates the intercalation of PMA chains into the galleries of O-ZnAl-LDH. The (001) diffraction of PMA/ZnAl-LDH nanocomposite is broad due to the exfoliation of some O-ZnAl-LDH layers. The TEM image shows that the most of the layers of O-ZnAl-LDH are stacked with a distance of about 3 nm while some of them are exfoliated and dispersed disorderly in the PMA matrix.展开更多
采用模拟移动床色谱对微生物油甲酯中ARA甲酯进行分离纯化,以ARA甲酯的纯度和收率为指标优化其分离工艺。结果表明,模拟移动床色谱分离纯化ARA甲酯的最佳工艺参数为:切换时间720 s、进样流速39.3 m L/min、洗脱流速8 m L/min、解吸流速4...采用模拟移动床色谱对微生物油甲酯中ARA甲酯进行分离纯化,以ARA甲酯的纯度和收率为指标优化其分离工艺。结果表明,模拟移动床色谱分离纯化ARA甲酯的最佳工艺参数为:切换时间720 s、进样流速39.3 m L/min、洗脱流速8 m L/min、解吸流速4.5 m L/min、再生流速5.5 m L/min。在该操作条件下,ARA甲酯纯度达到91%,收率达到92.9%。说明模拟移动床色谱可有效分离纯化微生物油甲酯中的ARA甲酯。展开更多
文摘A poly(methyl acrylate)(PMA)/ZnAl layered double hydroxide(ZnAl-LDH) intercalation nanocomposite is synthesized by in situ polymerization of methyl acrylate with ogano-modified ZnAl-LDH(O-ZnAl-LDH). Its structure and morphology are confirmed by X-ray diffraction(XRD) and transmission electron microscopy(TEM) image. The d 001 of O-ZnAl-LDH is expanded to 2.85 nm after polymerization from 2.63 nm, which indicates the intercalation of PMA chains into the galleries of O-ZnAl-LDH. The (001) diffraction of PMA/ZnAl-LDH nanocomposite is broad due to the exfoliation of some O-ZnAl-LDH layers. The TEM image shows that the most of the layers of O-ZnAl-LDH are stacked with a distance of about 3 nm while some of them are exfoliated and dispersed disorderly in the PMA matrix.
文摘采用模拟移动床色谱对微生物油甲酯中ARA甲酯进行分离纯化,以ARA甲酯的纯度和收率为指标优化其分离工艺。结果表明,模拟移动床色谱分离纯化ARA甲酯的最佳工艺参数为:切换时间720 s、进样流速39.3 m L/min、洗脱流速8 m L/min、解吸流速4.5 m L/min、再生流速5.5 m L/min。在该操作条件下,ARA甲酯纯度达到91%,收率达到92.9%。说明模拟移动床色谱可有效分离纯化微生物油甲酯中的ARA甲酯。
