引用本文:
钟声亮, 张迈生, 苏锵. 微波快速合成4A分子筛过程中镧复盐的作用[J]. 应用化学,
2005, 22(8): 865-869.
Citation: ZHONG Sheng-Liang, ZHANG Mai-Sheng, SU Qiang. Role of Lanthanum Double Salt in Rapid Synthesis of Zeolite 4A under Microwave Heating[J]. Chinese Journal of Applied Chemistry, 2005, 22(8): 865-869.
Citation: ZHONG Sheng-Liang, ZHANG Mai-Sheng, SU Qiang. Role of Lanthanum Double Salt in Rapid Synthesis of Zeolite 4A under Microwave Heating[J]. Chinese Journal of Applied Chemistry, 2005, 22(8): 865-869.
微波快速合成4A分子筛过程中镧复盐的作用
English
Role of Lanthanum Double Salt in Rapid Synthesis of Zeolite 4A under Microwave Heating
Abstract:
Zeolite 4A was rapidly synthesized under microwave heating,and the effect of the addition of lanthanum sulfate and sodium sulfate (LNS for short) on the synthesis was studied.It was found that with the addition of LNS the crystallization rate of zeolite 4A almost doubled,and the crystallization rate in microwave field was about ten times faster than that under conventional heating.The whiteness of the products obtained in microwave field was 94%,the calcium ions exchange capacity 310 mg CaCO3/g dry zeolite,and the average particle size 2.561 μm.With the addition of LNS,the whiteness was 96%,the calcium ion exchange capacity 318 mg CaCO3/g dry zeolite,and the average particle size 1.958 μm.Moreover,the LNS acts as a modulizer,and the crystal form of zeolite 4A became spherical with the addition of LNS.
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