本文選題：非晶態(tài)合金 + Ni基催化劑�。� 參考：《廣州大學》2017年碩士論文

【摘要】：煤化工、石油化工廠、制藥廠、苯酚及酚醛樹脂生產廠等會產生大量的含酚廢水,存在高毒性、難降解等缺點。同時,會對給水水源、水生生物也產生嚴重影響,酚具有一定毒性,會對微生物的生長速度造成明顯影響。而目前對含酚廢水的處理有吸附法、萃取法、氧化法、生物處理法等方法,處理過程中用到的催化劑幾乎都難以達到穩(wěn)定、可靠和安全的目的�；诜蔷B(tài)合金催化劑的特點,以及目前含酚廢水處理的現(xiàn)狀,有必要研制出高活性和高穩(wěn)定性的Ni基、Co基和Fe基等非晶態(tài)合金,以解決以上問題,實現(xiàn)環(huán)境效益和社會效益的雙贏。本文通過化學還原法分別制備了Ni-Mo-P非晶態(tài)合金催化劑、Co-Fe-B非晶態(tài)合金催化劑,采用溶膠-凝膠法合成Fe-Al-P-O非晶態(tài)合金催化劑,對不同制備條件下的非晶態(tài)合金催化劑進行了X射線衍射(XRD)、比表面積-孔徑分布測試(BET)、熱重分析(TG)、程序升溫還原(TPR)、程序升溫脫附(TPD)、及光電子能譜(XPS)等系列表征,研究分析了超聲波等因素對催化劑的結構、熱穩(wěn)定性、比表面與孔徑分布、還原性能、吸氫性能以及形貌等方面的影響。研究了不同條件下制備的Ni-Mo-P非晶態(tài)合金催化劑、Co-Fe-B非晶態(tài)合金催化劑、Fe-Al-P-O非晶態(tài)合金催化劑結構特點及其對模擬含酚廢水的催化降解性能,并探討了其催化降解苯酚廢水的工藝條件。結果表明:(1)超聲波對Ni-Mo-P非晶態(tài)合金催化劑的結構產生影響,而且在超聲25min,超聲功率為70W條件下,催化劑的比表面積達到了333.8m2/g,使用此催化劑3g,反應時間為120min,反應溫度100℃下,對苯酚的降解率達到了96.6%;(2)Fe的含量以及高溫處理會對Co-Fe-B非晶態(tài)合金催化劑的結構產生影響,Fe的含量的增加使Co的電子結合能發(fā)生正移,而且在Fe/Co的質量比為0.2,溫度為773k處理條件下,制備的Co-Fe-B非晶態(tài)合金催化劑非晶態(tài)結構較完善,使用此條件下制備的Co-Fe-B非晶態(tài)合金催化劑3g,反應時間為200min,反應溫度100℃下,對苯酚的降解率達到了87.9%;(3)560℃條件下制備的Fe-Al-P-O非晶態(tài)合金催化劑僅是FePO4和AlPO4的混合,并沒有新的物相產生。采用3克Fe-Al-P-O非晶態(tài)合金催化劑,反應時間100min,反應溫度100℃下,對苯酚的降解率為57.1%。
[Abstract]:Coal chemical, petrochemical plants, pharmaceutical factories, phenol and phenolic resin production plants will produce a large number of phenol wastewater, high toxicity, difficult to degrade and other shortcomings. At the same time, it has a serious effect on water supply and aquatic organisms. Phenol is toxic to a certain extent and has a significant effect on the growth rate of microorganisms. However, the treatment of phenol wastewater by adsorption, extraction, oxidation, biological treatment and so on, the catalyst used in the treatment process is almost difficult to achieve the purpose of stability, reliability and safety. Based on the characteristics of amorphous alloy catalysts and the present situation of phenol wastewater treatment, it is necessary to develop high active and stable amorphous alloys such as Ni base Co base and Fe base in order to solve the above problems. To achieve a win-win environment and social benefits. Ni-Mo-P amorphous alloy catalyst Co-Fe-B amorphous alloy catalyst was prepared by chemical reduction method. Fe-Al-P-O amorphous alloy catalyst was synthesized by sol-gel method. The amorphous alloy catalysts prepared under different preparation conditions were characterized by X-ray diffraction (XRD), specific surface area pore size distribution (BET), thermogravimetric analysis (TGN), temperature programmed reduction (TPRT), temperature programmed desorption (TPD), and photoelectron spectroscopy (XPS). The effects of ultrasonic wave on the structure, thermal stability, specific surface and pore size distribution, reduction performance, hydrogen absorption and morphology of the catalyst were investigated. The structure characteristics of Ni-Mo-P amorphous alloy catalyst Co-Fe-B amorphous alloy catalyst and its catalytic degradation performance for simulated phenol wastewater were studied. The process conditions for the catalytic degradation of phenol wastewater were also discussed. The results show that the structure of Ni-Mo-P amorphous alloy catalyst is affected by ultrasonic wave, and the specific surface area of the catalyst reaches 333.8 m2 / g under the condition of ultrasonic 25 min and ultrasonic power 70 W, the reaction time is 120 min, the reaction temperature is 100 鈩，

本文編號：2026885