1. 室温催化氧化甲醛Pt/TiO2基催化剂
研制出了可室温催化氧化甲醛的Pt/TiO2催化剂,该催化剂不需要任何外加能量,常温常压下就能将甲醛完全催化分解为H2O和CO2,无副产物产生,且具有良好的耐久性。与传统甲醛氧化催化剂和甲醛氧化剂相比,这种Pt/TiO2催化剂在国际上首次实现了甲醛气体的室温催化氧化。阐明了Pt的高度分散是Pt/TiO2催化剂具有室温高效催化氧化甲醛特性的关键因素,并明确了贵金属催化剂室温催化氧化甲醛的反应机理。(Catal. Commun., 2005, 6, 211; Appl. Catal. B, 2006, 65, 37; Catal. Today, 2007, 126, 345)
2. 碱金属添加和高温还原处理显著提高催化剂性能
发现碱金属对Pt/TiO2室温催化氧化甲醛活性显著的助催化作用,在苛刻的反应条件下,Pt/TiO2室温下甲醛的转化率仅为20%,而含碱金属的Pt/TiO2催化剂室温对甲醛的转化率为100%。同时揭示该助促进作用是碱金属添加促进了Pt在载体表面的原子级分散,开启了室温催化氧化甲醛的新途径。(Angew. Chem. Int. Ed., 2012, 51, 9628)
进一步研究发现碱金属的促进作用普适于Pd/TiO2和Ir/TiO2催化剂体系。碱金属添加能显著促进催化剂对氧气和水的活化,因此显著提高了Pd基和Ir基催化剂室温催化氧化甲醛性能;同时,进一步阐明了氧气和水在催化剂室温氧化甲醛反应过程中具有协同作用。(Environ. Sci. Technol., 2014, 48, 5816; Catal. Sci. Technol., 2016, 6, 2289; Catal. Today, 2017, 281, 412; ACS Catal., 2018, 8, 11377)
发现高温还原处理对Pd/TiO2催化剂室温氧化甲醛具有促进作用。揭示了高温还原处理促进Pd分散的反常现象,阐明了高温处理过程中载体产生的氧空位在氧化甲醛反应过程中活化水和氧的重要作用,为制备高分散的负载贵金属催化剂提供了新思路。(Appl. Catal. B, 2017, 217, 560)
3. 常温催化净化甲醛技术产业化
实现了常温催化净化甲醛技术的产业化应用,设计组建了室内甲醛净化功能组件和空气净化器。该新型甲醛空气净化器具有高效、耗能低、安全、使用寿命长以及没有二次污染等优势,各项指标均优于传统净化技术的空气净化器,新技术空气净化器已经取得了较好的经济和社会效益。该技术早在2008年就已应用和服务于第29届奥林匹克运动会,贺泓研究员为此获得“科技奥运先进个人”称号。该成果获中国专利优秀奖和2011年国家发明二等奖。
相关论文:
19.Xueyan Chen, Min Chen, Guangzhi He, Fei Wang, Guangyan Xu, Yaobin Li, Changbin Zhang*, Hong He, “Specific role of potassium in promoting Ag/Al2O3 for catalytic oxidation of formaldehyde at low temperature”, J. Phys. Chem. C., 122, (2018) 27331-27339.
18.Yaobin Li, Xueyan Chen, Chunying Wang, Changbin Zhang*, Hong He, “Sodium enhances Ir/TiO2 activity for catalytic oxidation of formaldehyde at ambient temperature”, ACS Catal., 8, (2018) 11377-11385.
17.Yaobin Li, Changbin Zhang*, Jinzhu Ma,Min Chen,Hua Deng, Hong He*, “High temperature reduction dramatically promotes Pd/TiO2 catalyst for ambient formaldehyde oxidation”, Appl. Catal. B, 217, (2017) 560-569.
16.Yaobin Li, Changbin Zhang*, Hong He, “Significant enhancement in activity of Pd/TiO2 catalyst for formaldehyde oxidation by Na addition”, Catal.Today,281, (2017) 412-417.
15.Yaobin Li, Changbin Zhang, Hong He*, Jianghao Zhang, Min Chen, “Influence of alkali metals on Pd/TiO2 catalysts for catalytic oxidation of formaldehyde at room temperature”, Catal. Sci. Technol., 6(7), (2016) 2289-2295.
14.Jianghao Zhang, Yaobin Li, Yan Zhang, Min Chen, Lian Wang, Changbin Zhang*, Hong He, “Effect of support on the activity of Ag-based catalysts for formaldehyde oxidation”,Sci. Rep., 5, (2015) 12950.
13.Jianghao Zhang, Yaobin Li, Lian Wang, Changbin Zhang*, Hong He. “Catalytic oxidation of formaldehyde over manganese oxides with different crystal structure”, Catal. Sci. Technol., 5(4), (2015) 2305-2313.
12.张江浩,王亚飞,张长斌*,贺泓,“负载方式对Ag/CoO3催化剂催化氧化甲醛活性的影响”,化学工业与工程,32(3),(2015)67-72.
11.Changbin Zhang, Yaobin Li, Yafei Wang, Hong He*, “Sodium-promoted Pd/TiO2 for catalytic oxidation of formaldehyde at ambient temperature”, Environ. Sci. Technol., 48, (2014) 5816-5822.
10.Changbin Zhang, Fudong Liu, YanpingZhai, Hiroko Ariga, Nan Yi, Yongchun Liu, Kiyotaka Asakura, Maria Flytzani-Stephanopoulos*, Hong He*, “Alkali metal promoted Pt/TiO2 opens a more efficient pathway to formaldehyde oxidation at ambient temperatures”, Angew. Chem. Int. Ed.2012, 51(38) 9628-9632.
9.Li Zhou, Junhui He*, Jie Zhang, Zhicheng He, Yucai Hu, Changbin Zhang, and Hong He, “Facile in-situ synthesis of manganese dioxide nanosheets on cellulose fibers and their application in oxidative decomposition of formaldehyde”, J. Phys. Chem. C, 2011, 115, 16873-16878.
8.Ken-ichi Tanaka*, Masashi Shou, Hong He, Changbin Zhang, Daling Lu, “A CO-tolerant hydrogen fuel cell system designed by combining with an extremely active Pt/CNT catalyst”, Catal. Lett., 127, (2009) 148-151.
7.Hongwei Gao*, Tingxia Yan, Changbin Zhang, Hong He, “Theoretical and experimental analysis on vibrational spectra of formate species adsorbed on Cu-Al2O3 catalyst”, J. Mol. Struct. (THEOCHEM), 857, (2008) 38-43.
6.Hongmin Chen, Junhui He*, Changbin Zhang, Hong He, “Self-assembly of novel mesoporous manganese oxide nanostructures and their application in oxidative decomposition of formaldehyde”, J. Phys. Chem. C, 111, (2007) 18033-18038.
5.Changbin Zhang, Hong He*, “A comparative study of TiO2 supported noble metal catalysts for the oxidation of formaldehyde at room temperature”, Catal. Today, 126, (2007) 345-350.
4.Changbin Zhang, Hong He*, Ken-ichi Tanaka, “Catalytic performance and mechanism of a Pt/TiO2 catalyst for the oxidation of formaldehyde at room temperature”, Appl. Catal.B, 65, (2006) 37-43.
3.Xiaoyan Shi, Changbin Zhang, Hong He, Masashi Shou, Ken-ichi Tanaka*, Shinichi Sugihara, Yoshitaka Ando, “Activation of Pt/TiO2 catalysts by structural transformation of Pt-sites”, Catal. Lett., 107(1-2), (2006) 1-4.
2.Changbin Zhang, Xiaoyan Shi, Hongwei Gao, Hong He*, “The elimination of formaldehyde over Cu-Al2O3 at room temperature”, J. Environ. Sci., 17, (2005) 429-432.
1.Changbin Zhang, Hong He*, Ken-ichi Tanaka, “Perfect catalytic oxidation of formaldehyde over a Pt/TiO2 catalyst at room temperature”, Catal. Commun., 6, (2005) 211-214.
相关专利:
- 6.贺泓,张江浩,张长斌,李要彬,王莲,一种锰氧化物催化剂用于催化氧化甲醛的用途,申请日期:2015 .06 .25,授权公告日:2017.08.22,发明专利号:ZL201510359133.2。
- 5.贺泓,张长斌,王莲,王少莘,一种用于室温甲醛净化的催化剂及其用途,申请日期:2015 .04 .22,授权公告日:2017.06.06,发明专利号:ZL 201510192626.1。
- 4.张长斌,贺泓,马金珠,王彩霞,郑述全,防尘防甲醛口罩,申请日期:2014年12月26日,授权公告日: 2015.8.19, 实用新型专利号: ZL201420848013.X。
- 3.贺泓,张长斌,田中虔一,一种高效的室温条件下催化完全氧化甲醛的催化剂,申请日:2004.12.28,授权公告日:2011.4.13,发明专利号:ZL200410102837.3。
- 2.贺泓,张长斌,王少莘,一种室温催化完全氧化甲醛的催化剂申请日:2007.9.6,授权公告日:2010.11.24,发明专利号:ZL200710121423.9。
- 1.贺泓,张长斌,王少莘,一种用于室温甲醛净化的金属载体负载的催化剂。申请号:PCT/CN2013/075700,申请日期:2013.5.16。