Synergy effect between hierarchical structured and Sn-modified H[Sn, Al]ZSM-5 zeolites on the catalysts for glycerol aromatization

Yang, Xinhui; Wang, Fei; Wei, Ruiping; Li, Shuai; Wu, Yuanfeng; Shen, Pengxin; Wang, Huazheng; Gao, Lijing; Xiao, Guomin

doi:10.1016/j.micromeso.2017.08.039

Cited by 41 publications

(28 citation statements)

References 43 publications

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“…Due to the preparation methods, the XRD patterns of the modified catalyst were almost the same as the bare ones. Meanwhile, the N2 adsorption and NH3-TPD profiles all showed similar tendency as Figures 3 and 4, which was in accordance with the literature [35].…”

Section: Characterization Of the Modified N-hzsm-5 Catalystssupporting

confidence: 90%

“…This was also confirmed by the Si/Al ratio obtained by ICP-OES listed in Table 3, which shows that a larger Si/Al ratio exhibited lower acid amounts. According to the glycerin aromatization reaction in fixed-bed and production analysis methods in our previous study [34,35], the catalytic performance of the catalysts were evaluated. The yields and distributions of different aromatics are shown in Figure 5.…”

Section: Characterization Of the N-hzsm-5 Catalystsmentioning

confidence: 99%

“…The n-HZSM-5 were synthesized by hydrothermal method [35] with adding different additives. Typically, certain amounts of AIP was dissolved in TPAOH.…”

Section: Catalysts Preparation and Characterizationmentioning

confidence: 99%

“…For the preparation of metal modified catalysts, the metal salts were added in the synthesize gel before crystallization. The molar ratio of metal salts and Al 2 O 3 were kept at 0.25:1 [35].…”

Section: Catalysts Preparation and Characterizationmentioning

confidence: 99%

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Effects of Additives and Metals on Crystallization of Nano-Sized HZSM-5 Zeolite for Glycerol Aromatization

2019

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Nano-sized HZSM-5 (n-HZSM-5) was synthesized and applied in the aromatization of glycerol. The effects of additives (carboxymethylcellulose sodium, NaCl, sodium alginate, etc.) on the chemical and physic properties of n-HZSM-5 during preparation were investigated. Metal modification was also investigated based on the synthesized n-HZSM-5. The results showed that the addition of carboxymethylcellulose sodium (CMC-Na), NaCl and sodium alginate (SA) led to forming smaller sizes of HZSM-5 and promoted the acid amounts of the catalysts, which increased its catalytic activities for obtaining BTX. The highest BTX yield of ~35% was obtained by SA derived n-HZSM-5, and the life of the catalyst were both obviously promoted by the additives with a highest of ~11 h by γ-(2,3-epoxypropoxy)propytrimethoxysilane (KH-560) derived n-HZSM-5. BTX yields could be improved by 40%by the addition of Zn and Cd in n-HZSM-5 while having little effect on the catalyst life.

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Section: Characterization Of the Modified N-hzsm-5 Catalystssupporting

confidence: 90%

Section: Characterization Of the N-hzsm-5 Catalystsmentioning

confidence: 99%

“…The n-HZSM-5 were synthesized by hydrothermal method [35] with adding different additives. Typically, certain amounts of AIP was dissolved in TPAOH.…”

Section: Catalysts Preparation and Characterizationmentioning

confidence: 99%

Section: Catalysts Preparation and Characterizationmentioning

confidence: 99%

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Effects of Additives and Metals on Crystallization of Nano-Sized HZSM-5 Zeolite for Glycerol Aromatization

2019

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“…The presence of mesopores can enhance diffusion for reactants and products, reduce the diffusion path length and provide the sufficient active sites during the reaction . Thirdly, catalytic activity and stability could be promoted by the direct synthesis of introducing heteroatom into zeolite framework . Miao et al.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Hierarchically Porous H[P, Al]‐ZSM‐5 and its Catalytic Performance in Coupling Transformation of Methanol with 1‐Butene

et al. 2019

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Hierarchically porous P substituted HZSM‐5 (H[P, Al]‐ZSM‐5‐AT‐0.05 M ) was successfully synthesized by isomorphous substitution method with introduced P atoms into ZSM‐5 zeolite frameworks followed by alkali treatment. H[P, Al]‐ZSM‐5‐AT‐0.05 M was characterized by XRD, ICP‐OES, SEM, FT‐IR, N2 adsorption‐desorption, NH3‐TPD, XPS, Py‐IR, and TG‐DTA, respectively. The surface area, pore volume, particle size and P/Al (molar ratio) are 328 m2.g−1, 0.23 cm3.g−1, 563 nm and 0.027, respectively. The catalytic performance of H[P, Al]‐ZSM‐5‐AT‐0.05 M in coupling reaction of methanol with 1‐butene was investigated in the fixed‐bed reactor. On the condition of reaction temperature at 500°C under atmosphere pressure, the main product is propylene with the selectivity and yield of 33.7% and 31.0%, respectively. Hydrogen transfer index was calculated to 0.24. Moreover, its diffusion limitation was investigated with the self‐etherification of benzyl alcohol reaction. The value of Thiele modulus (η ) and effectiveness factor (ϕ ) are 0.08 and 16.9, respectively.

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The Synergistic Effect of Hydroxylated Carbon Nanotubes and Ultrasound Treatment on Hierarchical HZSM-5 in the Selective Catalytic Upgrading of Biomass Derived Glycerol to Aromatics

Wang

Chu

et al. 2021

Catal Lett

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Synergy effect between hierarchical structured and Sn-modified H[Sn, Al]ZSM-5 zeolites on the catalysts for glycerol aromatization

Cited by 41 publications

References 43 publications

Effects of Additives and Metals on Crystallization of Nano-Sized HZSM-5 Zeolite for Glycerol Aromatization

Effects of Additives and Metals on Crystallization of Nano-Sized HZSM-5 Zeolite for Glycerol Aromatization

Synthesis of Hierarchically Porous H[P, Al]‐ZSM‐5 and its Catalytic Performance in Coupling Transformation of Methanol with 1‐Butene

The Synergistic Effect of Hydroxylated Carbon Nanotubes and Ultrasound Treatment on Hierarchical HZSM-5 in the Selective Catalytic Upgrading of Biomass Derived Glycerol to Aromatics

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