Fibrous crystals of boron-containing MTW-type zeolite have been hydrothermally synthesized in B2O3-SiO2-HF-H2O gel system at 170 ℃ in 20 to 28 d by using 1,4-diazabicyclo[2,2,2]octane (DABCO) and me-thylamine as the ...Fibrous crystals of boron-containing MTW-type zeolite have been hydrothermally synthesized in B2O3-SiO2-HF-H2O gel system at 170 ℃ in 20 to 28 d by using 1,4-diazabicyclo[2,2,2]octane (DABCO) and me-thylamine as the co-template, and characterized with XRD, SEM, TEM, HRTEM and SAED. The results of charac-terizations show that B atoms are incorporated into the zeolite framework as tetrahedron of B(OSi)4. The fibrous single crystals of 5—50 mm in length and 100—500 nm in width inter-grow along the c-axis of the zeolite, and the one dimension 12 oxygen ring channels are perpendicular to the fibber axis.展开更多
基金Project supported by the National Natural Science Foundation of China (No. 20073010) and The Nano-Materials Foundation of Shanghai (No. 0213NM042).
文摘Fibrous crystals of boron-containing MTW-type zeolite have been hydrothermally synthesized in B2O3-SiO2-HF-H2O gel system at 170 ℃ in 20 to 28 d by using 1,4-diazabicyclo[2,2,2]octane (DABCO) and me-thylamine as the co-template, and characterized with XRD, SEM, TEM, HRTEM and SAED. The results of charac-terizations show that B atoms are incorporated into the zeolite framework as tetrahedron of B(OSi)4. The fibrous single crystals of 5—50 mm in length and 100—500 nm in width inter-grow along the c-axis of the zeolite, and the one dimension 12 oxygen ring channels are perpendicular to the fibber axis.
