Catalytic pyrolysis of glycerol in the presence of Nickel (II) Schiff base complex supported in SBA-15: Kinetic and products (TG-FTIR and PY-CG/MS)

OliveiraMaia, Danielle de; SouzaChagas, Alanna Martinna de; Araújo, Aruzza Mabel de Morais; Júnior, Antonio Vicente de Mendonça; Ferreira, Isabelle Mariane de Lima; Lemos, F. C. D.; Araújo, Antônio S.; Júnior, Valter José Fernandes; Gondim, Amanda Duarte

doi:10.1016/j.tca.2018.09.005

Cited by 19 publications

(5 citation statements)

References 52 publications

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“…During the second mass loss stage, the rest of the glycerol was completely decomposed before 300 °C. 45 Between 200 and 400 °C, the dehydrogenation of C−H and C−O bands of the PVA long chain produced more CC band. When the temperature increased to around 500 °C, all of the CC bands oxidized rapidly.…”

Section: Resultsmentioning

confidence: 94%

“…As shown in the TGA curve (Figure g), the first mass loss of ∼1.9 wt % below 190 °C included the evaporation of a dispersant and a small amount of glycerol. During the second mass loss stage, the rest of the glycerol was completely decomposed before 300 °C . Between 200 and 400 °C, the dehydrogenation of C–H and C–O bands of the PVA long chain produced more CC band.…”

Section: Resultsmentioning

confidence: 99%

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Selectively Metalizable Low-Temperature Cofired Ceramic for Three-Dimensional Electronics via Hybrid Additive Manufacturing

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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With increasing interest in the rapid development of customized ceramic electronics, hybrid additive manufacturing (HAM) technology has become a competent alternative to traditional solutions such as printed circuit boards and cofired ceramic technology. Herein, the novel HAM technology is proposed by combining a dispensing three-dimensional (3D) printing process and selectively laser-activated electroless plating for fabricating 3D fully functional ceramic electronic products. An appropriative 3D-printable and metalizable low-temperature cofired ceramic slurry is developed to build the green body of ceramic electronics. After the debinding and sintering process, the 3D ceramic structure can be selectively laser-activated and then electrolessly plated to achieve electronic functionality. The thickness of the plated copper layer approaches 10 μm after 4 h of plating, and the electrical conductivity is 5.5 × 107 S m–1, which is close to pure copper (5.8 × 107 S m–1). To reduce the surface roughness of the laser-activated ceramic surface and thereby enhance the conductivity of the copper layer, the laser parameters are optimized as a 1250 mm s–1 scan speed, a 0.4 W laser power, and a 20 kHz laser-spot frequency. A high-power 3D light-emitting diode circuit board with an internal cooling channel is successfully developed to prove the feasibility of this HAM technology for customizing fully functional 3D conformal ceramic electronics.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Selectively Metalizable Low-Temperature Cofired Ceramic for Three-Dimensional Electronics via Hybrid Additive Manufacturing

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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“…[ 31 ] Simultaneously, the rest of the glycerol was decomposed completely by around 300 °C. [ 32 ] Finally, all the CC bands in the PVA molecule chain oxidized between 400 and 500 °C. [ 31 ] No mass loss was observed above 500 °C, indicating that the debinding process was accomplished by about 500 °C.…”

Section: Resultsmentioning

confidence: 99%

Multimaterial Additive Manufacturing of LTCC Matrix and Silver Conductors for 3D Ceramic Electronics

Wang

et al. 2022

Adv Materials Technologies

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Ceramic electronics have the advantages of large ampacity, high thermal conductivity, and excellent dielectric properties which are widely used in power electronics, optoelectronics, automotive industry, and aerospace technology. This work proposes a multimaterial dispensing additive manufacturing technology for customizing the 3D low‐temperature‐cofired ceramic (LTCC) circuitry. Customized LTCC aqueous slurry is first developed and then 3D printed together with commercial silver paste to build the green body. Then, the green body is debinded and sintered with a three‐stage process at 200, 500, and 850 °C, respectively. The shrinkage rate in 3D is around 17% which is comparable with commercial LTCCs. The surface quality of the sintered ceramic is improved obviously compared with that of the green body due to the glazing effect of the glass phase. For the silver conductor, the resistivity and the temperature coefficient of resistance are 2.34 ± 0.04 µΩ cm and 3.56 × 10−3 °C−1, respectively. A serial of demonstrators including 2D, 3D light‐emitting diode ceramic circuit boards and a ceramic heater/thermometer is developed to prove the potential and feasibility of the proposed technology.

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“…Therefore, the main products of glycerol pyrolysis are organic liquids, gases, and char. In order to promote the organic liquid yield (rich in products such as acetals, ketals, glycerol esters, and acrylic acids, among others), fast pyrolysis can represent an alternative (see Table 1, references [53,54]). Table 1 shows some specific catalysts that have recently been used in glycerol pyrolysis for different purposes, including the main details of each work.…”

Section: Pyrolysismentioning

confidence: 99%

Recent Advances in Glycerol Catalytic Valorization: A Review

et al. 2020

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Once a biorefinery is ready to operate, the main processed materials need to be completely evaluated in terms of many different factors, including disposal regulations, technological limitations of installation, the market, and other societal considerations. In biorefinery, glycerol is the main by-product, representing around 10% of biodiesel production. In the last few decades, the large-scale production of biodiesel and glycerol has promoted research on a wide range of strategies in an attempt to valorize this by-product, with its transformation into added value chemicals being the strategy that exhibits the most promising route. Among them, C3 compounds obtained from routes such as hydrogenation, oxidation, esterification, etc. represent an alternative to petroleum-based routes for chemicals such as acrolein, propanediols, or carboxylic acids of interest for the polymer industry. Another widely studied and developed strategy includes processes such as reforming or pyrolysis for energy, clean fuels, and materials such as activated carbon. This review covers recent advances in catalysts used in the most promising strategies considering both chemicals and energy or fuel obtention. Due to the large variety in biorefinery industries, several potential emergent valorization routes are briefly summarized.

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Catalytic pyrolysis of glycerol in the presence of Nickel (II) Schiff base complex supported in SBA-15: Kinetic and products (TG-FTIR and PY-CG/MS)

Cited by 19 publications

References 52 publications

Selectively Metalizable Low-Temperature Cofired Ceramic for Three-Dimensional Electronics via Hybrid Additive Manufacturing

Selectively Metalizable Low-Temperature Cofired Ceramic for Three-Dimensional Electronics via Hybrid Additive Manufacturing

Multimaterial Additive Manufacturing of LTCC Matrix and Silver Conductors for 3D Ceramic Electronics

Recent Advances in Glycerol Catalytic Valorization: A Review

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