[2] [2] LAKSHMI KANTAM M, M CHOUDARY B, VENKAT REDDY C, et al. Aldol and Knoevenagel condensations catalysed by modified Mg–Al hydrotalcite: A solid base as catalyst useful in synthetic organic chemistry[J]. Chem Commun, 1998(9): 1033–1034.

[4] [4] XU H H, GUO D S, JIANG Q Z, et al. Catalytic performance of sulfated silica MCM-41 for the cyclization of pseudoionone to ionones[J]. Chin J Catal, 2006, 27(12): 1080–1086.

[6] [6] ABELL S, MEDINA F, TICHIT D, et al. Aldol condensations over reconstructed Mg-Al hydrotalcites: Structure-activity relationships related to the rehydration method[J]. Chemistry, 2005, 11(2): 728–739.

[11] [11] RAO M M, REDDY B R, JAYALAKSHMI M, et al. Hydrothermal synthesis of Mg–Al hydrotalcites by urea hydrolysis[J]. Mater Res Bull, 2005, 40(2): 347–359.

[12] [12] MIYATA S, OKADA A. Synthesis of hydrotalcite-like compounds and their physico-chemical properties: The systems Mg2+-Al3+-SO42– and Mg2+-Al3+-CrO42–[J]. Clays Clay Miner, 1977, 25(1): 14–18.

[13] [13] CHEN C R, ZENG H Y, XU S, et al. Microwave-assisted preparation of SO42− intercalated hydrotalcites for ammonia–nitrogen removal[J]. RSC Adv, 2016, 6(16): 12753–12760.

[14] [14] KLOPROGGE J T, WHARTON D, HICKEY L, et al. Infrared and Raman study of interlayer anions CO32–, NO3–, SO42– and ClO4– in Mg/Al-hydrotalcite[J]. Am Mineral, 2002, 87(5–6): 623–629.

[15] [15] HE X Q, LIU X F, NIE B S, et al. FTIR and Raman spectroscopy characterization of functional groups in various rank coals[J]. Fuel, 2017, 206: 555–563.

[16] [16] PAN G X, XU M H, CHEN H F, et al. Interlayer structure and ion-exchange properties of hydrotalcite intercalated with CO32-, CrO42-, SO42- and NO3-[J]. Adv Mater Res, 2011, 287–290: 2102–2105.

[17] [17] DEL ARCO M, GUTIRREZ S, MARTN C, et al. FTIR study of isopropanol reactivity on calcined layered double hydroxides[J]. Phys Chem Chem Phys, 2001, 3(1): 119–126.

[18] [18] DUAN H Z, ZENG H Y, XIAO H M, et al. Optimization of ammonia nitrogen removal by SO42− intercalated hydrotalcite using response surface methodology[J]. RSC Adv, 2016, 6(54): 48329–48335.

[19] [19] KANNAN S. Influence of synthesis methodology and post treatments on structural and textural variations in MgAlCO3 hydrotalcite[J]. J Mater Sci, 2004, 39(21): 6591–6596.

[20] [20] RAO K K, GRAVELLE M, VALENTE J S, et al. Activation of Mg–Al hydrotalcite catalysts for aldol condensation reactions[J]. J Catal, 1998, 173(1): 115–121.

[21] [21] SUTTIPAT D, WANNAPAKDEE W, YUTTHALEKHA T, et al. Hierarchical FAU/ZIF-8 hybrid materials as highly efficient acid-base catalysts for aldol condensation[J]. ACS Appl Mater Interfaces, 2018, 10(19): 16358–16366.

[24] [24] TRIYASMONO L, SCHOLLMAYER C, HOLZGRABE U. Chemometric analysis applied to 1 H NMR and FTIR data for a quality parameter distinction of red fruit (Pandanus conoideus, lam.) oil products[J]. Phytochem Anal, 2023, 34(7): 788–799.

[25] [25] EMAMI L, ZARE F, KHABNADIDEH S, et al. Synthesis, design, biological evaluation, and computational analysis of some novel uracil-azole derivatives as cytotoxic agents[J]. BMC Chem, 2024, 18(1): 3.

[26] [26] LI J J, YAN G C, ZHOU L, et al. Molecular mechanism of the effect of benzene ring structure in nonionic surfactants on the wettability of anthracite[J]. Colloids Surf A Physicochem Eng Aspects, 2023, 657: 130634.

[28] [28] KOLLIYEDATH G, CHATTOPADHYAY T, MONDAL A, et al. Modeling reactivity of nitrite and nitrous acid at a phenolate bridged dizinc(II) site: Insights into NO signaling at zinc[J]. Chemistry, 2023, 29(58): e202301409.

[30] [30] ZHANG H L, ZHANG F, SUN W, et al. The effects of hydroxyl on selective separation of chalcopyrite from pyrite: A mechanism study[J]. Appl Surf Sci, 2023, 608: 154963.

[31] [31] ZEIDAN R K, HWANG S J, DAVIS M E. Multifunctional heterogeneous catalysts: SBA-15-containing primary amines and sulfonic acids[J]. Angew Chem Int Ed, 2006, 45(38): 6332–6335.

[32] [32] CLIMENT M, CORMA A, FORNS V, et al. Aldol condensations on solid catalysts: A cooperative effect between weak acid and base sites[J]. Adv Synth Catal, 2002, 344(10): 1090–1096.