A selective and stable alumina-supported In-promoted Fe catalyst (10 mol % In based on Fe) was discovered for converting syngas (2:1 H2/CO ratio) to olefins with high selectivity (45% with CO2 included) and a remarkable stability (72 h run) at a CO conversion of 10% at 400 °C and 5 bar. The X-ray photoelectron spectroscopy results indicated that incorporating In into Fe catalysts changed the chemical bonding state of Fe and Fe/In composition near the surface layers, which affected the catalytic reactivity. Steady-state isotopic transient kinetic analysis showed that more stable CHx fragments are present on the catalyst surface when incorporating In into Fe, which can promote C–C coupling reaction toward olefins. Our study demonstrates that introducing In into Fe catalysts on Al2O3 support can lower CO activation abilities. It has more impacts on lowering hydrogenation activity, which permits more C–C couplings and like of “ene” hydrogenation. Moreover, weakening CO adsorption both in terms of sites and strength encouraged CO toward hydrocarbons rather than CO2.

The study examines the impact of Jacuzzi bathtubs on house prices. Jacuzzi bathtubs have health related benefits. This study empirically tests a hedonic house pricing model using a sample of 138 houses in high income residential sub-market of Lekki phase one in Lagos metropolis. Forty-six duplexes have Jacuzzi bathtubs installed in their homes while Ninety-two do not. The study results show that that having Jacuzzi bathtubs increases home value by N2, 167,615.

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The Campanian-Maastrichtian sandstone and siltstone facies of the Bida and Enagi formations, northern Bida Basin Nigeria were logged and sampled. The study aims to evaluate the sandstone's petrographic, mineralogical, and bulk geochemical compositions. This is towards exemplifying sediment recycling, maturity, paleoweathering history, and the prevailing paleoclimatic conditions during depositions in the parts of Bida Basin. Petrography result reveals framework modal composition of Bida Formation sandstones as Q93.51−100F0−2.60L/R0 − 3.90 whereas the Enagi Formation sandstones constituents includes Q84.42−98.72F0−3.75L/R1.18−15.58, thus the Bida Formation sandstones are classified as mostly quartzarenite with minor sublitharenite whereas Enagi Formation sandstone are basically classified as sublitharenite with minor quartzarenite varieties. Mineralogical composition from the X-ray diffractions revealed higher kaolinite contents among the mineral constitutes with relatively high quartz contents while muscovite, anatase and iron-rich minerals (goethite and hematite) were recorded in trace amounts and this suggests significant post-depositional weathering prior to reworking. Higher geochemical weathering indices values, including chemical index of alteration (CIA), chemical index of weathering (CIW), plagioclase index of alteration (PIA), and chemical proxy for alteration (CPA), as well as the ternary A-CN-K and A-CNK-FM plots for both Bida and Enagi formations, suggest an intense weathering and reworking at the source area during late Cretaceous. Geochemical proxies, weathering indices and plots show that the compositionally mature to super mature sediments were deposited under warm, temperate to tropical humid climatic paleoclimatic settings. The light rare earth elements (LREE) enrichment relative to heavy rare earth elements (HREE) and low negative europium (Eu/Eu*) anomaly values with geochemical discrimination plots revealed that the sandstones were sourced from a felsic rocks’ provenance within a passive margin paleotectonic settings. This study concluded that the Campano-Maastrichtian Bida and Enagi formations siliciclastic sediments in the northern Bida sub-Basin, northcentral Nigeria were subjected to extreme weathering, during a warm, temperate to tropical humid climate with the dominance of semi-humid and only brief semi-arid conditions.

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