摘要
水滑石型化合物又称层状双金属氢氧化物（LDHs）或阴离子粘土，具类似于水镁石的层状结构。LDHs层中因部分二价阳离子被三价阳离子替代．使层板带正电荷，层间充填有平衡电荷的有机或无机阴离子以及水分子，
Nano Mg-Al LDHs were prepared from precursors of MgO and Al（OH）3 using a hydrothermal method in one step and the microstructural features were characterized by powder XRD and SEM. Crystallite sizes were determined by X-ray whole powder pattern fitting method. Effects of synthesis temperatures and alkalinity on phases formation,crystallinity and crystallite sizes of Mg-Al LDHs were investigated. Crystallite form evolved from thin plates to thick plates as the hydrothermal synthesis temperature increases. Layers of interlayer containing OH- and CO3^2- were distributed orderly or disorderly depending on the the starting alkalinity of the precursors along the c axis resulting in an interstratified Mg-Al LDHs structure.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2007年第6期1055-1058,共4页
Chinese Journal of Inorganic Chemistry
基金
山东理工大学科技基金项目(405029)资助。
