Microwave-assisted catalytic dehydration of glycerol for sustainable production of acrolein over a microwave absorbing catalyst

Xie, Qinglong; Li, Shanshan; Gong, Ruchao; Zheng, Gaoji; Wang, Yilei; Xu, Peng‐Fei; Duan, Ying; Yu, Shangzhi; Lu, Meizhen; Ji, Weirong; Nie, Yong; Ji, Jianbing

doi:10.1016/j.apcatb.2018.10.058

Cited by 70 publications

(27 citation statements)

References 44 publications

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“…Wang et al reported that coke has significant microwave absorbing properties and is easy to form “hotspots” under microwave . Therefore, under microwave irradiation, the reaction of C + CO 2 → CO is obviously sped up, which leads to the decrease of coke formation and the decrease of the catalyst deactivation rate . At the same time, SiC can form a “hot spot” due to excellent microwave absorption property, which can provide energy for the carbon elimination reaction and further reduce coke formation .…”

Section: Resultsmentioning

confidence: 99%

“…73 Therefore, under microwave irradiation, the reaction of C + CO 2 → CO is obviously sped up, which leads to the decrease of coke formation and the decrease of the catalyst deactivation rate. 74 At the same time, SiC can form a "hot spot" due to excellent microwave absorption property, which can provide energy for the carbon elimination reaction and further reduce coke formation. 75 Hence, the catalyst maintains longer-term stability under microwave irradiation than that under the CRM.…”

Section: Resultsmentioning

confidence: 99%

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Coke-Resistant Ni–Co/ZrO₂–CaO-Based Microwave Catalyst for Highly Effective Dry Reforming of Methane by Microwave Catalysis

Deng

et al. 2021

Ind. Eng. Chem. Res.

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The dry reforming of methane (DRM) reaction is an attractive approach to convert two greenhouse gases into valuable syngas. However, the DRM reaction remains a great challenge due to catalyst deactivation caused by coke formation. Herein, we reported a new method for a highly efficient DRM reaction by microwave catalysis and developed a novel Ni-Co/ZrO 2 -CaO-based microwave catalyst. Importantly, the CH 4 conversion and CO 2 conversion for Ni-Co/ZrO 2 -CaO + SiC in microwave catalytic reaction mode (MCRM) are highly up to 97.1 and 99.2%, respectively, at 800 °C. Comparatively, under identical reaction conditions in conventional reaction mode (CRM), the CH 4 conversion and CO 2 conversion is only 75.7 and 82%. Ni-Co/ZrO 2 -CaO + SiC catalyst showed favorable stability at 800 °C in the MCRM during the DRM reaction for 30 h. More importantly, it is found that microwave irradiation significantly reduced the coke formation compared with the CRM. Interestingly, microwave irradiation can accelerate the elimination of coke by dramatically speeding up the reaction between C and CO 2 , which exhibits a significant microwave selective catalytic effect. In addition, microwave radiation shows the direct catalytic effect of the microwave, which can reduce the apparent activation energy of the DRM reaction. Our work provides an innovative approach for the DRM reaction and thus opens a novel avenue to solve the coke formation in the DRM reaction.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Coke-Resistant Ni–Co/ZrO₂–CaO-Based Microwave Catalyst for Highly Effective Dry Reforming of Methane by Microwave Catalysis

Deng

et al. 2021

Ind. Eng. Chem. Res.

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“…Utilization of glycerol waste provides an opportunity to improve economic viability and significantly improve biodiesel business . Considerable research has been carried out on converting glycerol into high-value-added chemicals through selective oxidation, − esterification, , dehydration, − and hydrogenolysis . Furthermore, significant focus has been given to the catalytic dehydration or oxidation of glycerol into lactic acid (LA), which is needed to provide a versatile chemical platform in pharmaceutical and chemical industries.…”

Section: Introductionmentioning

confidence: 99%

Development of Au and 1D Hydroxyapatite Nanohybrids Supported on 2D Boron Nitride Sheets as Highly Efficient Catalysts for Dehydrogenating Glycerol to Lactic Acid

Bharath

Rambabu

Hai

et al. 2020

ACS Sustainable Chem. Eng.

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In this study, highly transparent and tightly packed two-dimensional boron nitride (2D BN NSs) nanosheets were prepared using an eco-friendly green-template-assisted synthesis method, where a banana stem powder was used as the bio template. Microscopic results indicated that 2D BN NSs mostly consisted of thin layers, with lateral sizes of 0.5 to 2 μm. Further, strongly coupled dual catalytic sites of 0D Au and c-axis oriented 1D hexagonal hydroxyapatite (HAp) nanorods were successfully immobilized and uniformly distributed on the surfaces of 2D BN NSs (Au/HAp/BN). A detailed study of Au/HAp/BN formation mechanism is presented in this paper. This study showed that due to the intriguing morphological, structural, and compositional features of Au/HAp/BN ternary nanohybrids, they can be used as an efficient heterogeneous catalytic oxidation system for oxidizing glycerol into lactic acid. In particular, the localized surface of BN was shown to exhibit high affinity toward adsorbing glycerol via higher adsorption affinity; therefore, an oxidizing reaction was obtained at the dual catalytic sites of Au and HAp in the heterogeneous catalytic system of Au/HAp/BN. On the Au/HAp/BN catalyst, 100% glycerol conversion yield was obtained with a high selective production of lactic acid (99.5%) in its base condition at a temperature of 100 °C. Different effects of the NaOH-glycerol molar ratio, reaction time of the catalytic activity, and selectivity of the Au/HAp/BN catalyst suggested that the dual-route reaction pathway was responsible for dehydrating glycerol to lactic acid; this has been elucidated in the paper. Reusability experiments showed the chemical stability and prolonged usage of the Au/HAp/BN catalyst, which can be beneficial for industrial applications.

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“…Corma et al [1] reviewed possible reaction routes for the utilization of glycerol as a starting material for various more valuable compounds. Some of the routes are etherification of glycerol to diglycerol and polyglycerols [1][2][3][4][5], oxidation of glycerol to dihydroxyacetone, dehydration of glycerol to acrolein [6,7], and preparation of glycerol carbonate (GC) [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

ZnO/SiO2 Composite as Catalyst for the Transformation of Glycerol to Glycerol Carbonate

2020

Makara J.Sci

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Microwave-assisted catalytic dehydration of glycerol for sustainable production of acrolein over a microwave absorbing catalyst

Cited by 70 publications

References 44 publications

Coke-Resistant Ni–Co/ZrO₂–CaO-Based Microwave Catalyst for Highly Effective Dry Reforming of Methane by Microwave Catalysis

Coke-Resistant Ni–Co/ZrO₂–CaO-Based Microwave Catalyst for Highly Effective Dry Reforming of Methane by Microwave Catalysis

Development of Au and 1D Hydroxyapatite Nanohybrids Supported on 2D Boron Nitride Sheets as Highly Efficient Catalysts for Dehydrogenating Glycerol to Lactic Acid

ZnO/SiO2 Composite as Catalyst for the Transformation of Glycerol to Glycerol Carbonate

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Microwave-assisted catalytic dehydration of glycerol for sustainable production of acrolein over a microwave absorbing catalyst

Cited by 70 publications

References 44 publications

Coke-Resistant Ni–Co/ZrO2–CaO-Based Microwave Catalyst for Highly Effective Dry Reforming of Methane by Microwave Catalysis

Coke-Resistant Ni–Co/ZrO2–CaO-Based Microwave Catalyst for Highly Effective Dry Reforming of Methane by Microwave Catalysis

Development of Au and 1D Hydroxyapatite Nanohybrids Supported on 2D Boron Nitride Sheets as Highly Efficient Catalysts for Dehydrogenating Glycerol to Lactic Acid

ZnO/SiO2 Composite as Catalyst for the Transformation of Glycerol to Glycerol Carbonate

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Coke-Resistant Ni–Co/ZrO₂–CaO-Based Microwave Catalyst for Highly Effective Dry Reforming of Methane by Microwave Catalysis

Coke-Resistant Ni–Co/ZrO₂–CaO-Based Microwave Catalyst for Highly Effective Dry Reforming of Methane by Microwave Catalysis