title: Creation of hollow SAPO-34 single crystals via alkaline or acid etching.
abstract: Hollow SAPO-34 crystals are created via selective etching of their precursor under controlled alkaline or acid conditions. The abundant/interconnected Si-O-Al domains and Si-O-Si networks at the outer layer of SAPO-34 crystals are revealed to be decisive factors for the base and acid treatments respectively to achieve a well-preserved hollow structure.
authors.affiliation: National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. tianpeng@dicp.ac.cn liuzm@dicp.ac.cn and University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
authors.forename: Yuyan
authors.initials: Y
authors.lastname: Qiao
authors.affiliation: National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. tianpeng@dicp.ac.cn liuzm@dicp.ac.cn.
authors.forename: Miao
authors.initials: M
authors.lastname: Yang
authors.affiliation: National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. tianpeng@dicp.ac.cn liuzm@dicp.ac.cn and University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
authors.forename: Beibei
authors.initials: B
authors.lastname: Gao
authors.affiliation: National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. tianpeng@dicp.ac.cn liuzm@dicp.ac.cn.
authors.forename: Linying
authors.initials: L
authors.lastname: Wang
authors.affiliation: National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. tianpeng@dicp.ac.cn liuzm@dicp.ac.cn.
authors.forename: Peng
authors.initials: P
authors.lastname: Tian
authors.affiliation: National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. tianpeng@dicp.ac.cn liuzm@dicp.ac.cn.
authors.forename: Shutao
authors.initials: S
authors.lastname: Xu
authors.affiliation: National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. tianpeng@dicp.ac.cn liuzm@dicp.ac.cn.
authors.forename: Zhongmin
authors.initials: Z
authors.lastname: Liu