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SBA-15 was also chosen as a support material for other types of HPAs in a study performed Tropecelo et al. [36].
The behavior of the reduction of surface area and the pores was also noticed in the work of Oball et. al [59] for TPA supported by activated carbon catalyst and Hernández-Cortez et al. [61] for TPA supported by alumina catalyst.
Physical properties of Al and the TPA catalysts.
Sample BET Surface area (m2/g) Total pore volume (cm3/g) Average pore diameter (A) Surface Acidity (µmol/g catalyst) AC 750 0.47 25.23 520 TPA15-AC 651 0.41 25 1530 TPA20-AC 621 0.39 25 1570 TPA25-AC 612 0.38 24.9 1690 Al 109.4 0.23 82.6 900 TPA25-Al 93.3 0.13 54.9 1300 TPA30-Al 83.4 0.10 52.0 1490 TPA35-Al 71.9 0.09 49.8 1570 8.
El-Shall, Acid catalyzed organic transformations by heteropoly tungstophosphoric acid supported on MCM-41, Appl.

A comparative activity and selectivity of Pt and Pd supported on calcined MgAl-LDH (Mg/Al=1.8) has been undertaken by Nikolopoulos et al. [44] for synthesis of MIBK from acetone and H2.
A series of Cu-Al, Cu-Mg-Al, Cu-Ce, Cu-Mg-Ce, Cu-Mg mixed oxide catalysts, derived from corresponding hydroxide/LDH precursors, have been used for this purpose in gas phase under atmospheric pressure [79,80].
Guisnet, et al.
Nicol, E.L. du Toit, One-step methyl isobutyl ketone synthesis from acetone and hydrogen using Amberlyst® CH28, Chem.
Al-Wadaani, E.F.

This phenomenon was further explained as a result of the effect of internal and external factors by Chen et al. [47].
Siores et al
El-Domiaty and A.A.

[3] A.L.
Wiedmann-Al-Ahmad, Structure and in vitro cytocompatibility of the gastropod shell of Helix pomatia, Tissue Cell. 38 (2006) 337–344
[23] E.L.

Ali Atif et al. [105] also showed that the extract could be used as a cream to increase skin revitalization and support the anti-aging effect due to its phenolic components, namely kaempferol, quercetin, rutin, galat, chlorogenic, el-logic, and ferulic acid as well as antioxidants including vitamins A, B, and C.
Nowak et al., “Bacterial cellulose membrane containing epilobium angustifolium l.
Embrandiri et al., “‘Microplastics’: The next threat to mankind?
Al-Douri, “3 - Synthesis and preparation of metal oxide powders,” in Metal Oxides, Y.
Al-Douri, Ed., Elsevier, 2020, pp. 31–65. doi: https://doi.org/10.1016/B978-0-12-817505-7.00003-8

Ouksaphea Pech et.al.
Young-Jung Heo et.al have synthesized electrospun carbon fiber with PAN precursor by electrospinning technique followed by carbonization and KOH activation.
Mater. 24 (2012) 2547–2566 [20] A.L.
Chee et al., “Electrospun graphene nanoplatelets-reinforced carbon nanofibers as potential supercapacitor electrode,” Mater.
Chee et al., “Electrospun nanofiber membranes as ultrathin flexible supercapacitors,” RSC Adv., vol. 7, no. 20, pp. 12033–12040, 2017.

Liu et al [29] developed microbial fuel cells (MFC), for the degradation of methyl orange (MO).
Barnes et al [47] examined electrochemical oxidation of primary aliphatic amines while Santos et al [48] reported that electro-degradation of aromatic amines, benzene-1,4-diamine, 4-aminobenzene-1,3-diol and 5-amino-2-methoxy-benzenesulphonic acid, using boron doped diamond as anode.
Sono ozonation: Wenrong et al [89] further examined the sono-ozonation of arsenazo I solutions.
Al-Ekabi (Eds.), Elsevier., Amsterdam, 1993
Prevot, E.L.

., Algeria. 3Department of Physics, Faculty of Sciences, University Badji Mokhtar, BP 12, 23000 Annaba. 4Department of Physics, Faulty of Science, King Abdulaziz University Jeddah, Saudi Arabia. 5LRPCSI, University 20 Août 1955, BP 26, Route El-Hadaiek, 21000 Skikda, Algeria.
These results are in good agreement with the results obtained by other researchers [20, 21]; furthermore, a recent study by Woods-Robinson et al. has revealed that usually with chemical synthesis methods a heterostructural, heterovalent alloy can be formed in varying degrees [1].
Al-Noaman, A.

Previous report confirmed that AgNPs with size range 7-10 nm mostly show the SPR peaks at 420 nm as reported by Modrzejewska et al 2010 [43].
Flores-López, E.L.
Al-Ali, R.A.

La-Al-Ni and La- AL-Cu.
Zr- Cu-Ni-Al) [11].
This type of coating is used extensively for machining of Al due to the chemical stability with Al at high temperature.
Similar burr formation characteristics were also observed in Al 6061 in Fig. 4.4.
El-Baradi, Machinability of nickel-base super alloys: a review, Journal of Materials Processing Technology 77 (1998) 278-284