Cation‐Exchange Characteristics of Sintered Hydroxyapatite in the Strongly Acidic Region
Cation‐Exchange Characteristics of Sintered Hydroxyapatite in the Strongly Acidic Region
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烧结羟基磷灰石在强酸性区域的阳离子交换特性
DOI：
10.1111/j.1151-2916.1993.tb03957.x
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发表时间：
1993
影响因子：
3.9
通讯作者：
Y. Hikichi
中科院分区：
文献类型：
--
作者：
Suguru Suzuki;Toshifumi Fuzita;T. Maruyama;Minoru Takahashi;Y. Hikichi
研究了高温焙烧的羟基磷灰石(Ca10(PO4)6-OH)2(HAP)在强酸性(pH 2和3)中的离子交换行为。根据目前的研究，在1000℃以上焙烧的HAP即使在pH为2的情况下也可以将钙离子交换到Pb2+，而不会溶解。离子交换后Pb2+/Ca2+的摩尔比在所有情况下都接近于1。离子交换发生在1300°C焙烧的HAP颗粒表面附近的一层薄层中。离子交换后，在强酸性区域(pH=2)生成了铅-氯-磷灰石晶体。
The ion-exchange behavior of hydroxyapatite (Ca10(PO4)6-OH)2) (HAp), fired at high temperatures, has been investigated in the strongly acidic region (pH 2 and 3). According to the present study, HAp fired above 1000°C can exchange ions from Ca2+ to Pb2+, even at pH 2, without dissolution. The molar ratios of Pb2+/Ca2+ after ion exchange are approximately unity in all cases. Ion exchange occurs in a thin layer near the surface of HAp particles fired at 1300°C. After ion exchange, Pb-Cl-apatite crystals are created in the strongly acidic region (pH 2).