（1. 广东工业大学 轻工化工学院，广东 广州 510006；2. 佛山市顺德区金磊环保科技有限公司，广东 佛山 528308）
付琳，姬文晋，何家俊，等. 陶瓷蜂窝净化材料的制备及吸附性能［J］. 中国粉体技术，2024，30（3）：170-182.
Objective Trimethylamine， a toxic， nitrogen-containing volatile organic compound， is widely recognized as an indoor odor pollutant， with its pungent odor significantly contributing to external air pollution. Microbiota can easily metabolize trimethylamine
pollutants， leading to the formation of trimethylamine-n-oxide， which is closely linked to various cardiovascular diseases. Therefore， there is an urgent need to purify such odor pollutants for people's well-being. In this paper， the effects of different modification methods on the adsorption and purification performance of ceramic honeycomb purification materials for trimethylamine
was thoroughly analyzed， ultimately aiming to achieve efficient purification of trimethylamine odor pollutants.
Methods A coating technology was used to directly apply metal ion active coatings onto ceramic honeycomb substrates， forming
integrated chemical purification materials. The process involved several steps： Firstly， the ceramic honeycomb substrate underwent pretreatment， including pickling， ultrasonic treatment， and high temperature calcination. Secondly， the pre-treated substrate was immersed into the mixed coating slurry containing aluminum sol， urea and metal ion salt for 10 h. Finally， the coating
sample was extracted， residual slurry was purged， and then the sample was dried within a temperature range of 100 to 200 ℃ for
10 h to obtain the monolithic ceramic honeycomb purification material modified with different metal ions. The static adsorption
capacity of trimethylamine was employed as the evaluation index for the purification efficiency of odor pollutants. The optimization of coating process parameters， including adhesive type， concentration of added urea， thermal treatment temperature， and the
modification of metal ions， was comprehensively examined， taking ino account different types and concentrations of metal ions.
Results and Discussion The adsorption capability of the pure ceramic honeycomb substrate for trimethylamine was not promi nent. However， upon modification with different adhesives， the trimethylamine adsorption capacity curve revealed that materials
modified with aluminum sol exhibited the highest adsorption performance， followed by silica sol and water. The adsorption performance of the modified ceramic honeycomb material for trimethylamine improved with increasing concentration of the poremaking agent urea. However， at a urea concentration of 1. 2 mol/L， there was no significant improvement in the adsorption
capacity of the modified ceramic honeycomb material for trimethylamine. Additionally， the adsorption capacity of trimethylamine on ceramic honeycomb materials initially increased and then declined with the increase of heat treatment temperature. At
a heat treatment temperature from 120 to 150 ℃， the ceramic honeycomb material exhibited optimaladsorption performance for
trimethylamine. The sequence of adsorption capacities for different metal ions， ranked from highest to lowest， was Ca2+， Fe3+，
Zn2+， Cu2+
and Mg2+， respectively. The adsorption capacities of modified Ca2+
and Fe3+
ceramic honeycomb materials for trimethylamine were 368 mg/g and 341 mg/g， respectively. As the concentration of metal ions increased， the adsorption capacity
of ceramic honeycomb material for trimethylamine initially rose and then declined. When the concentration of metal ions was
0.3 mol/L，the modified ceramic honeycomb material exhibited optimal adsorption performance for trimethylamine. In summary， the optimum preparation conditions for ceramic honeycomb purification materials can be determined as follows：choosing
aluminum sol as the adhesive， setting the concentration of urea additive at 0.9 mol/L，selecting a heat treatment temperature
between 120 and 150 ℃， using Ca2+ and Fe3+
as metal ion additives， and maintaining a concentration of metal ion additive at
0. 3 mol/L.
Compared to pure ceramic honeycomb materials，metal-ion-modified ceramic honeycomb purification materials， coated
with aluminum sol and urea additive， exhibited a significan enhancement in the adsorption capacity of trimethylamine. The
adsorption capacity of trimethylamine could increase by hundreds of times compared to the unmodified material. Furthermore，
even after thermal regeneration and repeated use of the same purification material， the decrease in trimethylamine adsorption performance was minimal. Additionally， upon scaling up the preparation by tenfold， the static adsorption capacity of the entire
chemical purification material， obtained by the same preparation process for trimethylamine pollutants， remained consistent with
that of the small-scale purification material. Overall， the saturation adsorption capacity of Ca2+
modified ceramic honeycomb
material for trimethylamine reached 368 mg/g. Even after repeated thermal regeneration， the purification performance of ceramic
honeycomb material for trimethylamine remained unchanged. Simultaneously， the ceramic honeycomb material obtained after a
tenfold enlargement of a single batch could still maintain the adsorption and purification properties of trimethylamine. These
results indicate that the preparation method is simple， the adsorption properties are commendable， and the obtained ceramic
honeycomb purification material has significant potential for largescale production.
Conclusion The as-prepared ceramic honeycomb purification material modified by metal ions proves to behighly effective in removing odor pollutants such as trimethylamine. Itboaststhe advantages such as high saturated adsorption capacity and the ability for repeated use. Moreover，the ceramic honeycomb material has good amplification repeatability and has the potential of large-scale production，allowing it well-suited for widespread application in the field of odor air purification.
Keywords：purification material；trimethylamine；ceramic honeycomb；coating process
［1］徐彦鹏，吕道飞，郭雅欣，等. 三甲胺移除技术的研究进展［J］. 广州化工，2023，51（11）：8-10.
XU Y P， LV D F， GUO Y X， et al. Research progress of trimethylamine removal technology［J］. Guangzhou Chemical Industry，2023，51（11）：8-10.
［2］DAI L，MASSY Z A， STENVINKEL P， et al. The association between TMAO， CMPF，and clinical outcomes in advanced chronic kidney disease： results from the European QUALity （EQUAL） study［J］. The American Journal Clinical Nutrition，2022，116（6）：1842-1851.
［3］LAI X X， ZHOU X Y， ZHANG H L， et al. Toluene oxidation over monolithic MnOx/La-Al2O3 catalyst prepared by a CTAB-assisted impregnation method［J］. Applied Surface Science，2020，526：146714.
［4］PASCUAL C， AKMIRZA I， PEREZ R， et al. Trimethylamine abatement in algal-bacterial photobioreactors［J］. Environmental Science and Pollution Research International，2020，27（9）：9028-9837.
［5］FU L， LIU Y， HAO S， et al. Preparation of magnetic composite adsorbents from laterite nickel ore for organic amineremoval［J］. Arabian Journal of Chemistry，2021，14（2）：102933.
［6］YAN C， ZHONG M， HAN J Q， et al. Efficient degradation of trimethylamine in gas phase by petal-shaped Co-MoS2catalyst in the photo-electrochemical system［J］. Chemical Engineering Journal，2021，405：127034.
［7］HAN J Q， LIU L F， LU X G. Sustainable and continuous removal of trimethylamine in a bio-photoelectrochemical reactorusing g-C3N4/TiO2 photocathode with power generation［J］. Journal of Chemical Technology & Biotechnology，2021，97（1）：218-227.
［8］LI X Q， ZHANG L， YANG Z Q， et al. Adsorption materials for volatile organic compounds （VOCs） and the key factors for VOCs adsorption process： a review［J］. Separation and Purification Technology，2020，235：116213.
［9］SAARELA T， LAFDANI E K， LAURÉN A， et al. Biochar as adsorbent in purification of clear-cut forest runoff water：adsorption rate and adsorption capacity［J］. Biochar，2020，2（2）：227-237.
［10］JIANG L， YANG N， ZHU J， et al. Preparation of monolithic Pt-Pd bimetallic catalyst and its performance in catalytic combustion of benzene series［J］. Catalysis Today，2013，216：71-75.
［11］TOMAŠIĆ V， JOVIĆ F. State-of-the-art in the monolithic catalysts/reactors［J］. Applied Catalysis A：General，2006，311：112-121.
［12］ZHAO Q， ZHENG Y F， SONG C F， et al. Novel monolithic catalysts derived from in-situ decoration of Co3O4 and hierarchical Co3O4@MnOx on Ni foam for VOC oxidation［J］. Applied Catalysis B： Environmental，2020，265：11852.
［13］HOU Y J， MA J， SUN Z Z， et al. Degradation of benzophenone in aqueous solution by Mn-Fe-K modified ceramic honeycomb-catalyzed ozonation［J］. Journal Environment Science （China），2006，18（6）：1065-1072.
［14］YU J， LI X Y， XU Z H， et al. NaOH-modified ceramic honeycomb with enhanced formaldehyde adsorption and removal performance［J］. Environment Science Technology，2013，47（17）：9928-9933.
［15］SANTOS D F M， SOARES O S， FIGUEIREDO J L， et al. Optimization of the preparation conditions of cordierite honeycomb monoliths washcoated with cryptomelane-type manganese oxide for VOC oxidation［J］. Environment Technology，2021，42（16）：2504-2515.
［16］HOSSAIN M M， MOK Y S， NGUYEN D B， et al. Nonthermal plasma in practical-scale honeycomb catalysts for the removal of toluene［J］. Journal Hazardous Materials，2021，404：123958.
［17］CHAI W S， ZHANG L， LI W Z， et al. Preparation of plastics and foaming agent-free and porous bamboo charcoal based composites using sodium silicate as adhesives［J］. Materials （Basel），2021，14（10）：2468.
［18］赵晓敏，陈代荣，焦秀玲，等. 溶胶组成对氧化铝纤维微观结构及性质的影响［J］. 广州化工，2019，47（9）：68-75.
ZHAO X M， CHEN D R， JIAO X L， et al. Effect of sol composition on microstructure and properties of alumina fiber［J］.Guangzhou Chemical Industry，2019，47（9）：68-75
［19］刘羽祚，李喜德，李菊英，等. 造孔剂（NH4 ）2CO3和尿素含量对TiAl多孔材料性能的影响［J］. 粉末冶金材料科学与工程，2019，24（3）：255-260.
LIU Y Z， LI X D， LI J Y， et al. Effect of pore-forming agent （NH4 ）2CO3and urea content on properties of TiAl porous material［J］. Powder Metallurgy Materials Science and Engineering，2019，24（3）：255-260.
［20］同帜，李岩，闫笑，等 . 3 种不同造孔剂对黄土基陶瓷膜支撑体性能的分析研究［J］. 功能材料，2020，51（2）：2182-2187.
TONG Z， LI Y， YAN X， et al. Analysis of properties of three different pore-forming agents on loess based ceramic mem⁃brane support［J］. Functional Materials，2020，51（2）：2182-2187.
［21］薛红丹，董国君，龚凡，等. 选择性催化还原（SCR）脱除NOx的实验研究［J］.应用科技，2006（3）：50-52.
XUE H D， DONG G J， GONG F， et al. Experimental study on removal of NOx by selective catalytic reduction（SCR）［J］.Applied Science and Technology，2006（3）：50-52.
［22］CACUA K， ORDOÑEZ F， ZAPATA C， et al. Surfactant concentration and pH effects on the zeta potential values of alumina nanofluids to inspect stability［J］. Colloids and Surfaces A： Physicochemical and Engineering Aspects，2019，583：123960.
