Li Kai, Bolatibieke Dana, Yang Shi-Guan, Wang Bo, Nan Dong-Hong, Lu Qiang
National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University Beijing 102206 China
RSC Adv. 2020 Jun 18;10(39):23331-23340. doi: 10.1039/d0ra03993d. eCollection 2020 Jun 16.
A promising approach is proposed for the efficient conversion of soy sauce residue (SSR) into aromatic hydrocarbons and a supercapacitor electrode material by catalytic fast pyrolysis (CFP) technology with HZSM-5. The thermal decomposition behaviors of SSR were first investigated thermogravimetry (TG) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) analyses. The CFP of SSR was conducted to elucidate the aromatic hydrocarbons production under different pyrolysis temperatures and HZSM-5-to-SSR (HZ-to-SSR) ratios using both Py-GC/MS and lab-scale instruments. The results indicated that the aromatic hydrocarbons reached the maximal yields of 22.20 wt% from Py-GC/MS with an HZ-to-SSR ratio of 11 at 650 °C, and 17.61 wt% from the lab-scale device with an HZ-to-SSR ratio of 2, respectively. The as-obtained yield of aromatic hydrocarbons was far higher than those obtained from typical lignocellulosic biomass materials, confirming that SSR is a promising material for aromatics production. The pyrolytic solid product collected with this method was further activated by KOH to synthesize N-doped activated carbon (NAC) for supercapacitors. The physicochemical analysis showed that NAC possessed N-incorporated hierarchical pores, and exhibited a promising capacitance of 274.5 F g at 1 A g.
提出了一种很有前景的方法，通过使用HZSM-5的催化快速热解（CFP）技术，将酱油渣（SSR）高效转化为芳烃和超级电容器电极材料。首先通过热重分析（TG）和热解气相色谱/质谱联用（Py-GC/MS）分析研究了SSR的热分解行为。利用Py-GC/MS和实验室规模仪器对SSR进行CFP，以阐明在不同热解温度和HZSM-5与SSR（HZ-to-SSR）比例下芳烃的生成情况。结果表明，在650℃下，HZ-to-SSR比例为11时，通过Py-GC/MS得到的芳烃最大产率为22.20 wt%，而在HZ-to-SSR比例为2时，实验室规模装置得到的芳烃产率为17.61 wt%。所获得的芳烃产率远高于从典型木质纤维素生物质材料中获得的产率，这证实了SSR是一种有前景的芳烃生产原料。用这种方法收集的热解固体产物通过KOH进一步活化，以合成用于超级电容器的氮掺杂活性炭（NAC）。物理化学分析表明，NAC具有含氮的分级孔隙结构，在1 A g时表现出274.5 F g的良好电容。
