A waste to wealth approach through utilization of nano-ceramic tile waste as an accessible and inexpensive solid support to produce a heterogeneous solid acid nanocatalyst: to kill three birds with one stone

Abstract

Waste minimization through the utilization of cost-effective, available, and nontoxic nano-ceramic tile wastes for the heterogenization of sulfuric acid.

Waste-to-wealth transition: application of natural waste materials as sustainable catalysts in multicomponent reactions

“…Various 2,4,5-trisubstituted imidazole cores 100 were prepared via the pseudo-four-component reactions of aromatic aldehydes 1 , benzyl 28 , and ammonium acetate 9 using n -CTW-SA as the catalyst (Scheme 57). 103…”

Magnetic apple seed starch functionalized with 2,2′‐furil as a green host for cobalt nanoparticles: Highly active and reusable catalyst for Mizoroki–Heck and the Suzuki–Miyaura reactions

“…For instance, applying waste materials in catalytic field can be a constructive step as far as environment and the economy are concerned . The wastes can either be used directly as a catalyst or be converted into active catalysts by modifying . Of course, it is to be noted that not all supports are not suitable for use in catalytic applications.…”

“…[4] The wastes can either be used directly as a catalyst or be converted into active catalysts by modifying. [5] Of course, it is to be noted that not all supports are not suitable for use in catalytic applications. Typically, suitable properties of catalyst support materials are: (i) environmental friendliness, (ii) high chemical and thermal durability, (iii) low cost, (iv) inertness against air and moisture, and (v) ease of chemical modification.…”

Urea–Zinc Chloride Eutectic Mixture-Mediated One-Pot Synthesis of Imidazoles: Efficient and Ecofriendly Access to Trifenagrel

“…(benzo[d][1,3]dioxol-5-yl)-4,5-diphenyl-1H-imidazole (3n): White solid; Mp= 253-255 °C,reported 254 °C; 71 H NMR (400 MHz, CDCl 3 ) δ 7.54-7.48 (m, 5H, ArH), 7.42 (d, J = 7.7 Hz, 1H, ArH), 7.34-7.30 (m, 6H, ArH), 6.85 (d, J = 8.1 Hz, 1H, ArH), 6.02 (s, 2H, -OCH 2 O-); 13 C NMR (100 MHz, CDCl 3 ) δ 148.3, 145.9, 138.1, 134.9, 130.0, 129.1, 128.7, 127.8, 127.5, 124.3, 119.1, 118.0, 108.7, 106.2, 101.5; IR (KBr) [cm -1 ]: ν max = 3289, 2950, 1685, 813; MS (m/z): 340 (M + ). 1,4-bis(4,5-diphenyl-1H-imidazol-2-yl)benzene (3o): Yellow solid; Mp= 286-289°C,reported >300 °C; 81 H NMR (400 MHz, CDCl 3 ) δ 8.19 (dd, J = 7.6, 2.2 Hz, 2H, ArH), 7.77-7.74 (m, 3H, ArH), 7.72-7.69 (m, 3H, ArH), 7.57-7.55 (m, 2H, ArH), 7.52-7.49 (m, 5H, ArH), 7.46-7.42 (m, 3H, ArH), 7.41-7.37 (m, 6H); 13 C NMR (100 MHz, CDCl 3 ) δ 147.4, 144.9, 141.7, 140.1, 139.3, 137.2, 134.7, 132.6, 132.5, 131.9, 130.3, 129.9, 129.3, 128.7, 128.7, 128.6, 128.2, 128.1, 127.9, 127.8, 127.5; IR (KBr) [cm -1 ]: ν max = 3153, 1674, 840; MS (m/z): 514 (M + ).…”

“…(3,4,5-trimethoxyphenyl)-1H-phenanthro[9,10-d]imidazole (3r): Light brown solid;Mp= 176-178 °C; 1 H NMR (400 MHz, DMSO) δ 8.85 (d, J = 8.3 Hz, 3H, ArH), 8.57 (d, J = 7.8 Hz, 3H, ArH), 7.75 (t, J = 8.0 Hz, 2H, ArH), 7.64 (s, 2H, ArH), 3.97 (s, 9H, -OCH 3 ); 13 C NMR (100 MHz, DMSO) δ 153.7, 149.3, 139.3, 128.1, 127.6, 127.1, 125.9, 125.4, 124.6, 124.4, 122.4, 104.3, 60.6, 56.6; IR (KBr) [cm -1 ]: ν max = 3200, 2995, 1650, 1132, 850; MS (m/z): 384 (M + ).…”