scholarly journals Two-step preparation of Keggin-PW12@UIO-66 composite showing high-activity and long-life conversion of soybean oil into biodiesel

RSC Advances ◽  
2021 ◽  
Vol 11 (60) ◽  
pp. 38016-38025
Author(s):  
Yuxin Zhang ◽  
Xinluo Song ◽  
Shicong Li ◽  
Bangyao Zhao ◽  
Liangliang Tong ◽  
...  
Keyword(s):  
Soybean Oil ◽  
High Activity ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Step Process ◽  
Long Life

A Keggin-PW12@UIO-66 composite has been synthesized solvothermally through a two-step process and employed as a solid acid catalyst to convert soybean oil into biodiesel.

scholarly journals Synthesis of Sulfonic Acid-Functionalized Zirconium Poly(Styrene-Phenylvinyl-Phosphonate)-Phosphate for Heterogeneous Epoxidation of Soybean Oil

Catalysts ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 710 ◽  
Author(s):  
Xiaochuan Zou ◽  
Xuyuan Nie ◽  
Zhiwen Tan ◽  
Kaiyun Shi ◽  
Cun Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Soybean Oil ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Thiol Group ◽  
Catalytic Performance ◽  
X Ray ◽  
Sulfonic Acid Groups

In this paper, a solid acid catalyst (ZPS–PVPA–SO3H) was prepared by anchoring thiol group on zirconium poly(styrene-phenylvinyl-phosphonate)-phosphate (ZPS–PVPA), followed by oxidation of thiol groups to obtain sulfonic acid groups. The solid acid catalyst was characterized by XPS, X-ray, EDS, SEM, and TG-DSC. The successful preparation of sulfonic acid-functionalized ZPS–PVPA was confirmed. Subsequently, the catalytic performance of ZPS–PVPA–SO3H was investigated in the epoxidation of soybean oil. The results demonstrated that ZPS–PVPA–SO3H can effectively catalyze epoxidation of soybean oil with TBHP as an oxidant. Moreover, there was no significant decrease in catalytic activity after 5 repeated uses of the ZPS–PVPA–SO3H. Interestingly, the ZPS–PVPA–SO3H was kept in 2 mol/L of HCl overnight after the end of the seventh reaction, and the catalytic activity was gradually restored during the eighth to tenth cycles.

Enhanced epoxidation of soybean oil by novel Al 2 O 3 –ZrO 2 –TiO 2 solid acid catalyst

2020 ◽  
Vol 35 (1) ◽  
Author(s):  
Xiaoli Wei ◽  
Qianwei Cheng ◽  
Tingguang Sun ◽  
Shan Tong ◽  
Luli Meng
Keyword(s):  
Soybean Oil ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst

Synthesis, characterization and properties of Ce-modified S2O82−/ZnAl2O4 solid acid catalysts

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 105908-105916 ◽  
Author(s):  
Jun-Xia Wang ◽  
An-Qi Wang ◽  
Yu-Lin Xing ◽  
Zheng-Xin Zhu ◽  
Xiu-Ling Wu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
High Activity ◽  
Spinel Structure ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Solid Acid Catalysts ◽  
Acid Catalysts

A new S2O82−/ZnAl2O4-4 wt% Ce solid acid catalyst with stable spinel structure performed the high activity and well reusability in esterification of acetic acid and n-butanol.

scholarly journals Interesterification for biofuel synthesis over HJ-2# caly-supported SO42-/ZrO2 solid acid catalyst

2021 ◽  
Vol 290 ◽  
pp. 01033
Author(s):  
Dong Lixin ◽  
Zhang Xueqiong ◽  
Chen Jing ◽  
Hao Yinan ◽  
Pang Liwen ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Maximum Yield ◽  
Acid Catalyst ◽  
Acid Sites ◽  
Preparation Condition ◽  
Molar Ratio ◽  
Impregnation Method ◽  
Ft Ir

This study makes use of soybean oil to produce biodiesel using SO42-/ZrO2-HJ-2# caly solid acid catalyst (SZ-HJ-2#). It was through coprecipitation and impregnation method that the catalyst was prepared which was then characterized by means of FE-SEM, XRD, EDS, BET, FT-IR, ICP-MS, NH3-TPD and XPS. The catalytic property of the synthesized catalyst was determined by using it to produce biodiesel from soybean oil. A study was carried out to find the effect of the different preparation condition of catalyst affecting the process. For SZ-HJ-2#, Optimized condition of 0.5 mol/L(zirconium salt solution), 1.5 mol/L (the concentration of sulfuric acid impregnating solution) and 450℃(calcination temperature). Optimized conditions of 8.32:1 methanol to soybean oil molar ratio and catalytic loading of 1 wt% at 55℃ with a stirring rate of 500 rpm for a reaction duration of 10 h gave a maximum yield of 89.6 wt%. Moreover, the further investigation indicated the catalytic activities were closely related to the ratio of Brönsted acid sites and intensity on catalysts. Besides, the excellent performance of the catalyst during recycling was shown by conducting reusability study.

Corncob lignocellulose for the production of furfural by hydrothermal pretreatment and heterogeneous catalytic process

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 60264-60272 ◽  
Author(s):  
Aojie Deng ◽  
Junli Ren ◽  
Huiling Li ◽  
Feng Peng ◽  
Runcang Sun
Keyword(s):  
Heterogeneous Catalysis ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Environmentally Friendly ◽  
Acid Catalyst ◽  
Hydrothermal Pretreatment ◽  
Heterogeneous Catalytic Process ◽  
Step Process ◽  
Heterogeneous Catalytic ◽  
Furfural Production

In this paper, an environmentally-friendly two-step process for furfural production was developed by the hydrothermal pretreatment of corncob and the heterogeneous catalysis of the hydrolysate using a solid acid catalyst.

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