Melting-assisted solvent-free synthesis of hierarchical SAPO-34 with enhanced methanol to olefins (MTO) performance

Ziyu Liu; Shu Ren; Xing Yu; Xinqing Chen; Gang Wang; Xian Wu; Gan Yu; Minghuang Qiu; Chengguang Yang; Yuhan Sun

doi:10.1039/C7CY02283B

Melting-assisted solvent-free synthesis of hierarchical SAPO-34 with enhanced methanol to olefins (MTO) performance†

Ziyu Liu,^a Shu Ren,^ad Xing Yu,^ac Xinqing Chen,

*^a Gang Wang,^a Xian Wu,^ac Gan Yu,^ab Minghuang Qiu,^a Chengguang Yang^a and Yuhan Sun*^ab

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* Corresponding authors

^a CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
E-mail: chenxq@sari.ac.cn, sunyh@sari.ac.cn
Fax: +86 21 20350958
Tel: +86 21 20350958

^b School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China

^c Shanghai University, Shanghai 200444, China

^d Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai, China

Abstract

SAPO-34 zeolite with a butterfly patterned hierarchical pore system and high relative crystallinity was synthesized by a melting-assisted solvent-free route. Oxalic acid in the solid state was used as the etching agent through a facile thermal treatment of the parent SAPO-34. The resultant zeolite exhibited complete methanol conversion, high C₂⁼–C₄⁼ selectivity (>91%) and a long lifetime in the MTO process.

Catalysis Science & Technology

Melting-assisted solvent-free synthesis of hierarchical SAPO-34 with enhanced methanol to olefins (MTO) performance†

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Melting-assisted solvent-free synthesis of hierarchical SAPO-34 with enhanced methanol to olefins (MTO) performance

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