分子催化
分子催化
분자최화
JOURNAL OF MOLECULAR CATALYSIS(CHINA)
2002年
5期
379-383
,共5页
季山%廖世军%王乐夫%Vladimir Linkov%Leslie Petrik
季山%廖世軍%王樂伕%Vladimir Linkov%Leslie Petrik
계산%료세군%왕악부%Vladimir Linkov%Leslie Petrik
分子筛%固体超强酸%合成%表征
分子篩%固體超彊痠%閤成%錶徵
분자사%고체초강산%합성%표정
Superacid catalyst%ZSM-5%Preparation%Characterization
以硅溶胶和氧氯化锆为硅源和锆源, 采用水热合成的方法制得具有ZSM-5结构的Zr-Si分子筛; 用0.5 mol/L的硫酸处理该分子筛,并在550 ℃焙烧, 制得具有ZSM-5结构的SO42-/ZrO2-SiO2分子筛型的固体超强酸. 采用XRD、 SEM、 TG、 IR、 NH3-TPD和指示剂法对其结构和酸性进行表征. 结果表明, 该SO42-/ZrO2-SiO2具有ZSM-5结构和超强酸性, 其酸强度大于-13.75, 且具有良好的热稳定性.
以硅溶膠和氧氯化鋯為硅源和鋯源, 採用水熱閤成的方法製得具有ZSM-5結構的Zr-Si分子篩; 用0.5 mol/L的硫痠處理該分子篩,併在550 ℃焙燒, 製得具有ZSM-5結構的SO42-/ZrO2-SiO2分子篩型的固體超彊痠. 採用XRD、 SEM、 TG、 IR、 NH3-TPD和指示劑法對其結構和痠性進行錶徵. 結果錶明, 該SO42-/ZrO2-SiO2具有ZSM-5結構和超彊痠性, 其痠彊度大于-13.75, 且具有良好的熱穩定性.
이규용효화양록화고위규원화고원, 채용수열합성적방법제득구유ZSM-5결구적Zr-Si분자사; 용0.5 mol/L적류산처리해분자사,병재550 ℃배소, 제득구유ZSM-5결구적SO42-/ZrO2-SiO2분자사형적고체초강산. 채용XRD、 SEM、 TG、 IR、 NH3-TPD화지시제법대기결구화산성진행표정. 결과표명, 해SO42-/ZrO2-SiO2구유ZSM-5결구화초강산성, 기산강도대우-13.75, 차구유량호적열은정성.
Zr-ZSM-5 zeolite has been synthesized by using normal inorganic Si and Zr reagents, and standard hydrothermal techniques. The SO42-/Zr-ZSM-5 catalyst was prepared by impregnating the synthesized zeolite with 0.5 mol/L sulfuric acid solution and calcined at 823 K. The structure and acidity of the SO42-/Zr-ZSM-5 catalyst was characterized by XRD, SEM, TG, IR, NH3-TPD and indicator method. The results show that the SO42-/Zr-ZSM-5 catalyst possesses ZSM-5 structure and superacidity. The acid strength of SO42-/Zr-ZSM-5 catalyst was stronger than -13.75 (H0), and the catalyst showed good thermal stability.
