典型文献
Structural characteristic and formation mechanism of hemihydrate calcium sulfate whiskers prepared using FGD gypsum
文献摘要：
Hemihydrate calcium sulfate whiskers (HH-CSWs) were hydrothermally synthesized in a sulfuric acid solution at 120 ℃ for different holding times (20,40,and 60 min).The phase structures and morphologies were characterized by XRD and SEM,respectively.The XRD pattern of the sample under 60 min was refined via the Rietveld fitting method.The structure models of the HH-CSW sample under a 60-min holding time was established based on Rietveld fitting results.No difference in the positions of diffraction peaks was determined.The as-prepared holding time increased the intensity and aspect ratio of the diffraction peaks of both samples.In the prepared HH-CSW structure,Ca-O polyhedron is a 12-sided polyhedron similar to that in the gypsum structure;the Ca atom is located in two positions in the one-unit cell;the H2Q channel along the c-axis similar is O-shaped and bigger than that in hexagonal and monoclinic CaSO4·0.5H2O structures.Therefore,although the prepared HH-CSW crystals' structure are similar to that of the reported hexagonal and monoclinic CaSO4·0.5H2O structures,they are not the same.The formation mechanism of HH-CSW from flue gas desulfurization (FGD) gypsum is discussed based on the analysis of gypsum structure.
文献关键词：
中图分类号：
作者姓名：
Xiaoting Zhang;Lingwei Ran;Xiao Wang;Biao Jin;Jianwu Zhang;Shanying Li;Liushuan Yang
作者机构：
Department of Civil & Material Engineering,Henan University of Urban Construction,Pingdingshan 4670236,Henan,China
文献出处：
引用格式：
[1]Xiaoting Zhang;Lingwei Ran;Xiao Wang;Biao Jin;Jianwu Zhang;Shanying Li;Liushuan Yang-.Structural characteristic and formation mechanism of hemihydrate calcium sulfate whiskers prepared using FGD gypsum)[J].颗粒学报（英文版）,2022(03):98-103
A类：
Hemihydrate,H2Q
B类：
Structural,characteristic,formation,mechanism,hemihydrate,calcium,sulfate,whiskers,prepared,using,FGD,gypsum,HH,CSWs,were,hydrothermally,synthesized,sulfuric,acid,solution,different,holding,times,phase,structures,morphologies,characterized,by,respectively,pattern,under,was,refined,via,Rietveld,fitting,method,models,established,results,No,difference,positions,diffraction,peaks,determined,increased,intensity,aspect,ratio,both,samples,In,polyhedron,sided,similar,that,atom,located,two,one,unit,cell,channel,along,axis,shaped,bigger,than,hexagonal,monoclinic,CaSO4,5H2O,Therefore,although,crystals,reported,they,not,same,from,flue,gas,desulfurization,discussed,analysis
AB值：
0.4869
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