Promoting effect of boron oxide on Cu/SiO2 catalyst for glycerol hydrogenolysis to 1,2-propanediol

Zhu, Shengyun; Gao, Xiaoqing; Zhu, Yulei; Zhu, Yulong; Zheng, Hongyan; Li, Yongwang

doi:10.1016/j.jcat.2013.03.018

Cited by 221 publications

(171 citation statements)

References 48 publications

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“…In the H2-TPR profiles (Figure 2), a shift in the reduction peak towards higher temperature with the increase in B content was observed. Similar observations have been reported in the literature where the authors ascribed the peak-shift to the strong interaction between CuO and B2O3 [27].…”

Section: Catalyst Characterizationsupporting

confidence: 91%

“…At these experimental conditions, 5Cu-1B/Al 2 O 3 demonstrated the superior performance among other B 2 O 3 incorporated catalysts and achieved 80% glycerol conversion with 98% selectivity towards 1,2-PDO. Similar results have been reported by Zhu et al for B 2 O 3 -doped Cu/SiO 2 catalysts for the synthesis of propylene glycol [27]. The authors attributed the enhancement in the glycerol conversion to the synergistic effect caused by Cu-B surface interaction which accelerated the surface activity of Cu metal.…”

Section: Influence Of B Incorporationsupporting

confidence: 88%

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Selective Hydrogenolysis of Glycerol and Crude Glycerol (a By-Product or Waste Stream from the Biodiesel Industry) to 1,2-Propanediol over B2O3 Promoted Cu/Al2O3 Catalysts

et al. 2017

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Abstract:The performance of boron oxide (B 2 O 3 )-promoted Cu/Al 2 O 3 catalyst in the selective hydrogenolysis of glycerol and crude glycerol (a by-product or waste stream from the biodiesel industry) to produce 1,2-propanediol (1,2-PDO) was investigated. The catalysts were characterized using N 2 -adsorption-desorption isotherm, Inductively coupled plasma atomic emission spectroscopy (ICP-AES), X-ray diffraction (XRD), ammonia temperature programmed desorption (NH 3 -TPD), thermogravimetric analysis (TGA), temperature programmed reduction (TPR), and transmission electron microscopy (TEM). Incorporation of B 2 O 3 to Cu/Al 2 O 3 was found to enhance the catalytic activity. At the optimum condition (250 • C, 6 MPa H 2 pressure, 0.1 h −1 WHSV (weight hourly space velocity), and 5Cu-B/Al 2 O 3 catalyst), 10 wt% aqueous solution of glycerol was converted into 1,2-PDO at 98 ± 2% glycerol conversion and 98 ± 2% selectivity. The effects of temperature, pressure, boron addition amount, and liquid hourly space velocity were studied. Different grades of glycerol (pharmaceutical, technical, or crude glycerol) were used in the process to investigate the stability and resistance to deactivation of the selected 5Cu-B/Al 2 O 3 catalyst.

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Section: Catalyst Characterizationsupporting

confidence: 91%

Section: Influence Of B Incorporationsupporting

confidence: 88%

Selective Hydrogenolysis of Glycerol and Crude Glycerol (a By-Product or Waste Stream from the Biodiesel Industry) to 1,2-Propanediol over B2O3 Promoted Cu/Al2O3 Catalysts

et al. 2017

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“…It is used for polyester resins, liquid detergents, pharmaceuticals, cosmetics, tobacco humectants, flavors and fragrances, personal care, paints, animal feed, antifreeze, etc. [6]. Traditionally, it is produced by the hydration of propylene oxide derived from propylene by either the chlorohydrin process or the hydroperoxide process.…”

Section: Introductionmentioning

confidence: 99%

“…The glycerol hydrogenolysis reaction is suggested to proceed via dehydration of glycerol to acetol and 3-hydroxypropanal by acid catalysis and subsequent hydrogenation to the glycols by metal catalysts [6][7][8][9]. Besides the hydrogenolysis reaction, degradation reactions involving C-C breaking also occur.…”

Section: Introductionmentioning

confidence: 99%

“…Many supported metal catalysts have been reported for this type of reaction in liquid phase. Tomishige and co-workers [6][7][8][9] reported the use of supported group VIII metals (especially Ru/C and Rh/SiO 2 ) catalysts in combination with a strong solid acid (Amberlyst 15, 70) at mild temperatures of 120. 8°C and H 2 pressures of 4-8 MPa.…”

Section: Introductionmentioning

confidence: 99%

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Catalytic functionalities of nano Ru catalysts supported on TiO2–ZrO2 mixed oxide for vapor phase hydrogenolysis of glycerol to propanediols

et al. 2015

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Vapor phase hydrogenolysis of glycerol was studied over Ru catalysts supported on TiO 2 -ZrO 2 binary oxide. Ru catalysts with various ruthenium loadings from 1.0 to 6.0 wt% were prepared by deposition-precipitation method on the TiO 2 -ZrO 2 mixed oxide support. These catalysts were characterized by X-ray diffraction, H 2 temperature-programmed reduction, NH 3 temperatureprogrammed desorption, transmission electron microscopy, BET surface area, XPS and CO chemisorption measurements. The catalysts exhibited superior performance for the vapor phase hydrogenolysis of glycerol at moderate temperature and atmospheric pressure. The mixed oxide support plays a significant role in improving the catalytic activity for the production of propanediols. The glycerol conversion and the selectivity of various products depend on the catalyst preparation method and also on the Ru content. The influence of acidity of the catalyst and its correlation to the catalytic performance (selectivity and conversion) has been studied. The weak and strong acidic sites of the catalysts measured by NH 3 -TPD play a key role in selective formation of 1,2-propanediol and 1,3-propanediol. XRD, TEM, XPS and CO chemisorption studies revealed that ruthenium was well dispersed on TiO 2 -ZrO 2 which further contributed to the superior catalytic activity for glycerol hydrogenolysis.

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Inorganic‐Rich Interphase Induced by Boric Oxide Solid Acid toward Long Cyclic Solid‐State Lithium‐Metal Batteries

Cheng,

Cao,

et al. 2023

Adv Funct Materials

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Solid‐state electrolytes paired with lithium‐metal anodes is considered a next‐generation energy storage technology. However, the slow ionic transportation of the solid‐state electrolyte and the instability against the lithium‐metal anode impede their practical application. Here a cellulose separator modified with highly uniform boric oxide solid acid, contributing to a high transference number (0.75) and good ionic conductivity of 0.52 mS cm−1 due to the strengthened binding of the salt anions with this solid acid, is reported. Moreover, the boron ions with occupied interstitial sites can release free electrons to regulate the electrochemical dynamics of the electrolyte, in situ inducing the formation of Li2CO3/LiF‐rich heterostructured solid electrolyte interphase layer. The cellulose/B2O3‐based composite electrolyte paired with LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode and Li‐metal anode displays a specific capacity of 155 mAh g−1 with a capacity retention of 92% in 200 cycles. Additionally, this electrolyte paired with high‐mass‐loading NCM622 cathode (10 mg cm−2) in a pouch cell can be stably operated for 50 cycles with a capacity retention of over 90%.

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Promoting effect of boron oxide on Cu/SiO2 catalyst for glycerol hydrogenolysis to 1,2-propanediol

Cited by 221 publications

References 48 publications

Selective Hydrogenolysis of Glycerol and Crude Glycerol (a By-Product or Waste Stream from the Biodiesel Industry) to 1,2-Propanediol over B2O3 Promoted Cu/Al2O3 Catalysts

Selective Hydrogenolysis of Glycerol and Crude Glycerol (a By-Product or Waste Stream from the Biodiesel Industry) to 1,2-Propanediol over B2O3 Promoted Cu/Al2O3 Catalysts

Catalytic functionalities of nano Ru catalysts supported on TiO2–ZrO2 mixed oxide for vapor phase hydrogenolysis of glycerol to propanediols

Inorganic‐Rich Interphase Induced by Boric Oxide Solid Acid toward Long Cyclic Solid‐State Lithium‐Metal Batteries

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