收稿日期: 2018-04-06
网络出版日期: 2020-04-29
基金资助
国家自然科学基金资助项目(51578329)
Preparation of propionic acid and lactic acid intercalated LDHs and comparison of loading carbon content
Received date: 2018-04-06
Online published: 2020-04-29
在模拟体系下,采用共沉淀法分别合成了丙酸、乳酸以及二者组成的混酸插层的层状双金属氢氧化物 (layereddouble hydroxides, LDHs). X 射线衍射 (X-ray diffraction,XRD) 图谱和傅里叶红外 (Fourier transform infrared,FTIR) 光谱分析结果表明,3 种 LDHs 样品均符合 Ni/Fe-LDH 的结构特征,并且丙酸和乳酸都成功插层进入 LDHs 层间.C2H5COO-LDH 和 C2H5COO-C3H5O3-LDH 层间丙酸的载碳量分别为 (2.38±0.07) 和 (2.27±0.05) mmol/g LDH,C2H5COO-LDH 和 C2H5COO-C3H5O3-LDH 层间乳酸的载碳量分别为 (1.57±0.04) 和 (0.84±0.03) mmol/g LDH.这表明无论是单酸还是混酸插层的 LDHs, 丙酸都比乳酸的插层效果好.
生亮, 姜莉, 叶敏, 刘建勇, 钱光人, 李玉友, 许志平 . 丙酸和乳酸插层的 LDHs 制备及其载碳量比较[J]. 上海大学学报(自然科学版), 2020 , 26(2) : 255 -262 . DOI: 10.12066/j.issn.1007-2861.2023
Layered double hydroxides (LDHs) intercalated with propionate anions, lactate anions and mixed acid were synthesized with co-precipitation method under the artificial system. Results of X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy analysis indicated that the three LDHs samples were coincident with the structure of Ni/Fe-LDH. Additionally, lactate anions and propionate anions were successfully intercalated into LDHs. The loading carbon contents of propionic acid in C2H5COO-LDH and C2H5COO-C3H5O3-LDH were (2.38±0.07) and (2.27±0.05) mmol/g LDH, respectively, while the loading carbon contents of lactic acid in C2H5COO-LDH and C2H5COO-C3H5O3-LDH were (1.57±0.04) and (0.84±0.03) mmol/g LDH, respectively, indicating that propionate anion was more competitive than lactate anion to be intercalated into LDHs.
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