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·1560· 精细化工 FINE CHEMICALS 第 35 卷

Technol, 2015, 5: 2649–2669.
[5] de Rivas B, López-Fonseca R, Jiménez-González C, et al. Synthesis,
characterisation and catalytic performance of nanocrystalline Co 3O 4
for gas-phase chlorinated VOC abatement [J]. J Catal, 2011, 281(1):
88–97.
[6] Chen M, Ma Y, Li G F, et al. Support effect, thermal stability, and
structure feature of toluene combustion catalyst [J]. Catal Commun,
2008, 9(6): 990–994.
[7] Luo M F, He M, Xie Y L, et al. Toluene oxidation on Pd catalysts
supported by CeO 2-Y 2O 3 washcoated cordierite honeycomb [J]. Appl
Catal B, 2007, 69: 213–218.
[8] Bedia J, Rosas J M, Rodtigue-Mirasol J, et al. Pd supported on

图 6 Pd/γ-Al 2 O 3 -IM （ a ）， Pd/γ-Al 2 O 3 -DP （ b ）和 mesoporous activated carbons with high oxidation resistance as
catalysts for toluene oxidation [J]. Appl Catal B, 2010, 94(1/2): 8–18.
Pd/γ-Al 2 O 3 -SA（c）的 H 2 -TPR 谱图 [9] Qian Jinze (钱金泽), Li Sen (李森), Luo Yong (罗勇), et al. Studies
Fig. 6 H 2 -TPR profile of Pd/γ-Al 2 O 3 -IM(a), Pd/γ-Al 2 O 3 - on Cr-Ce/H-MOR catalysts for the oxidative degradation of
DP(b) and Pd/γ-Al 2 O 3 -SA(c) trichloroethylene [J]. Fine Chemicals (精细化工), 2016, 33(7): 779–
786.
从图 6 可以看出，Pd/γ-Al 2 O 3 -IM 在 110 和 235 ℃ [10] Huang S Y, Zhang C B, He H. Complete oxidation of o-xylene over
附近出现两个耗氢峰，这是还原 PdO 颗粒所致 [33] ； Pd/Al 2O 3 catalyst at low temperature [J]. Catal Today, 2008,
139(1/2): 15–23.
Pd/γ-Al 2 O 3 -DP 和 Pd/γ-Al 2 O 3 -SA 在 110 和 300 ℃附 [11] [11] Kim S C, Shim W G. Properties and performance of Pd based
近出现两个耗氢峰，前者是还原催化剂表面较小的 catalysts for catalytic oxidation of volatile organic compounds [J].
Appl Catal B, 2009, 92(3/4): 429–436.
PdO 颗粒所致，后者是还原与 γ-Al 2 O 3 载体存在强相
[12] Tidahy H L, Hosseni M, Siffert S, et al. Nanostructured macro-
互作用（SMSI）的 PdO 颗粒所致 [34-35] 。Pd/γ-Al 2 O 3 -SA mesoporous zirconia impregnated by noble metal for catalytic total
上 PdO 的耗氢峰相较 Pd/γ-Al 2 O 3 -DP 而言，峰高且 oxidation of toluene [J]. Catal Today, 2008, 137(2/3/4): 335–339.
[13] Xiao L H, Sun K P, Xu X L, et al. Low-temperature catalytic
尖锐，说明 Pd/γ-Al 2 O 3 -SA 上 PdO 与 γ-Al 2 O 3 载体的
combustion of methane over Pd/CeO 2 prepared by deposition-
相互作用较强，PdO 在 γ-Al 2 O 3 载体上呈高度分散的 precipitation method [J]. Catal Commun, 2005, 6(12): 796–801.
状态 [36] 。 [14] Huang H B, Ye X G, Huang H L, et al. Mechanistic study on
formaldehyde removal over Pd/TiO 2 catalysts: Oxygen transfer and
role of water vapor [J]. Chem Eng J, 2013, 230: 73–79.
3 结论
[15] Basile F, Fornasari G, Gazzano M, et al. Rh, Ru and Ir catalysts
obtained by HT precursors: effect of the thermal evolution and
通过 3 种不同方法分别制备了低负载量 Pd/γ- composition on the material structure and use [J]. J Mater Chem,
Al 2 O 3 催化剂用于催化氧化甲苯。与浸渍法、沉积沉 2002, 12(11): 3296–3303.
[16] Tong X, Zhao Y X, Huang T, et al. Controlled synthesis of
淀法相比，自组装法制备的 Pd/γ-Al 2 O 3 催化剂的比
pompon-like self-assemblies of Pd nanoparticles under microwave
表面积和孔体积最大，Pd 纳米粒子平均粒径最小； irradiation [J]. Appl Surf Sci, 2009, 225(23): 9463–9468.
同时，活性组分主要以 PdO 的形式高度分散在 [17] Zhang Y, Chen C, Gong W B, et al. Self-assembled Pd/CeO 2
catalysts by a facile redox approach for high-efficiency
γ-Al 2 O 3 载体表面，并与 γ-Al 2 O 3 之间存在强相互作 hydrogenation of levulinic acid into gamma-valerolactone [J]. Catal
用。在甲苯体积分数为 0.1%、空速为 18000 mL/（g·h） Commun, 2017, 93: 10–14.
条件下，自组装 Pd/γ-Al 2 O 3 催化剂的 T 98 为 220 ℃， [18] Ferreira R S G, De Oliveira P G P, Noronha F B. Characterization and
catalytic activity of Pd/V 2O 5/Al 2O 3 catalysts on benzene total
经 50 h 连续反应测试，甲苯的转化率始终保持在 oxidation [J]. Appl Catal B, 2004, 50(4): 243–249.
97%以上，具有良好的催化氧化甲苯活性和稳定性， [19] [19] Baylet A, Royer S, Marecot P, et al. Effect of Pd precursor salt
on the activity and stability of Pd-doped hexaaluminate catalysts for
对于今后 VOCs 的催化燃烧具有潜在的应用价值。
the CH 4 catalytic combustion [J]. Appl Catal B, 2008, 81(1/2):
88–96.
[20] Demoulin O, Rupprechter G, Seunier I, et al. Investigation of
参考文献：
parameters influencing the activation of a Pd/gamma-alumina
[1] Zhang Z X, Jiang Z, Shangguan W F. Low-temperature catalysis for catalyst during methane combustion [J]. J Phys Chem B, 2005,
VOCs removal in technology and application: A state-of-the-art 109(43): 20454–20462.
review [J]. Catal Today, 2016, 264: 270–278. [21] Jabłońska K, Król A, Kukulska-Zajac E, et al. Zeolites Y modified
[2] Li Weibin (黎维彬), Gong Hao (龚浩). Recent progress in the with palladium as effective catalysts for low-temperature methanol
removal of volatile organic compounds by catalytic combustion [J]. incineration [J]. Appl Catal B, 2015, 166/167: 353–365.
Acta Phys-Chim Sin (物理化学学报), 2010, 26(4): 885–894. [22] He C, Zhang F W, Yue L, et al. Nanometric palladium confined in
[3] Spivey J J. Complete catalytic oxidation of volatile organics [J]. Ind mesoporous silica as efficient catalysts for toluene oxidation at low
Eng Chem Res, 1987, 26(11): 2165–2180. temperature [J]. Appl Catal B, 2012, 111/112: 46–57.
[4] Huang H B, Xu Y, Feng Q Y, et al. Low temperature catalytic [23] Djakovitch L, Wagner M, Hartung C G, et al. Pd-catalyzed Heck
oxidation of volatile organic compounds: a review [J]. Catal Sci arylation of cycloalkenes–studies on selectivity comparing