水滑石的插层及其选择性红外吸收性能

An assembled Mg 2Al CO 3 SO 4 hydrotalcite has been prepared by ion exchanging of Mg 2Al CO 3 hydrotalcite with SO 2- 4 . The Mg 2Al CO 3 SO 4 hydrotalcite obtained has well formed crystal structure and performs higher selective IR adsorption function than Mg 2Al CO 3 hydrotalcite.

磷酸二氢根插层水滑石的制备及其选择性红外吸收性能

采用成核/晶化隔离法制备了镁铝碳酸根型水滑石(MgAl-CO3-LDHs),以其为前驱体,在酸性条件下通过离子交换将磷酸二氢根阴离子组装到水滑石层间,制备了具有超分子插层结构的MgAl-H2PO4-LDHs,并采用XRD、FTIR、TG-DTA-DTG、SEM和ICP等手段进行了表征。采用母粒工艺将MgAl-CO3-LDHs和MgAl-H2PO4-LDHs添加到聚乙烯(PE)中制备了LDHs/PE薄膜,研究其红外吸收性质发现,添加MgAl-H2PO4-LDHs的PE薄膜在7～25μm特别是9～11μm范围的红外吸收率明显高于添加MgAl-CO3-LDHs的薄膜,表现出显著的选择性红外吸收性能。