Biodiesel

Wang, Yiwei; Norris, Timothy B.; Kakegawa, Michiyo

doi:10.4135/9781412971850.n10

Cited by 2 publications

(4 citation statements)

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“…of PET. 19 The degradation increases with increase in temperature and time (Figure 8). Similar behavior has been observed by Bendak et al 33 The solubility of oligomer only in DMSO help in higher activity.…”

Section: Mechanism Of the Processmentioning

confidence: 98%

“…These methods are unattractive from an economical view point due to their high energy consumption or because they require equipment's that withstand high pressures. Wang et al 19 have reported the degradation of PET using ionic liquids but this method required high temperature, pressure, and longer reaction time (10 h), so it is economically not feasible.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrotalcite have been reported to be an ecofriendly, inexpensive readily available, and widely used catalyst for organic synthesis. 20 This study using hydrotalcite shows that PET bottle chips are degraded in dimethyl sulfoxide (DMSO) within 10 min while other catalyst (like sodium hydroxide, zinc chloride, lithium chloride, magnesium chloride, and ferric chloride) 19,21,22 required high temperature, pressure, and longer reaction time (8-10 h). Hydrotalcite enhances rate of the reaction due to large surface area, week Lewis acidity, high adsorption capacity while other commonly used catalyst like (sodium hydroxide, metal acetate (lead, zinc, cobalt, and manganese) 22 shows low surface area.…”

Section: Introductionmentioning

confidence: 99%

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Recycling of waste PET‐bottles using dimethyl sulfoxide and hydrotalcite catalyst

Sharma¹,

Parashar²,

Srivastava³

et al. 2012

J of Applied Polymer Sci

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The degradation of PET bottles has been successfully achieved using hydrotalcite as catalyst and dimethyl sulfoxide (DMSO) as solvent. The reaction was carried out at boiling point of DMSO (190°C) and degradation was complete in 10 min. The oligomer (tetramer) obtained was treated with NaOH at room temperature in methanol to get dimethyl terephthalate (DMT) and ethylene glycol (EG). Thus, it is a safe and cleaner process. Oligomer was characterized by MS,13C‐NMR, X‐ray diffractometric, and thermogravimetric analysis. DMT and EG were characterized by GC‐MS. DMT was also characterized by FT‐IR. GC‐MS analysis shows that the purity of DMT was 99%. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2012

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Section: Mechanism Of the Processmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Recycling of waste PET‐bottles using dimethyl sulfoxide and hydrotalcite catalyst

Sharma¹,

Parashar²,

Srivastava³

et al. 2012

J of Applied Polymer Sci

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“…Therefore, in order to make full use of the energy and enhance the selectivity to target products, coupling the exothermic MTO reaction with endothermic 1-butene cracking reaction has been profitable and promising, which could obtain thermoneutral and energy balance. [5] According to previous studies, the zeolite-based acid catalysts have been used to various reactions for outstanding properties, such as the thermal stability, shape selectivity, higher catalytic activity and so on. [6] The shape-selective ZSM-5 zeolite is a hot catalytic materials used in coupling methanol with 1-butene reaction.…”

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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Biodiesel

Cited by 2 publications

References 0 publications

Recycling of waste PET‐bottles using dimethyl sulfoxide and hydrotalcite catalyst

Recycling of waste PET‐bottles using dimethyl sulfoxide and hydrotalcite catalyst

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

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