## 2 Experimental Section
### Catalyst Characterization Techniques  
The crystalline phases of the prepared samples were characterized by X-ray diffraction (XRD) using a Rigaku ULTIMA III diffractometer (Rigaku Corporation, Tokyo, Japan). Copper K\(\alpha\) radiation, generated at 40 kV and 44 mA, served as the X-ray source. Diffractograms were acquired across a 20 range of 10\({}^{\circ}\) to 80\({}^{\circ}\), with a scan rate of 2\({}^{\circ}\)/min. The functional bonds and groups in the catalyst samples were identified using Fourier-transform infrared (FT-IR) spectroscopy (Nicolet iS 50, Thermo Fisher Scientific, Waltham, MA, USA). Nitrogen adsorption analysis was conducted using a Micromeritics ASAP 2020 Plus surface area and porosimeter system (Micromeritics Instrument Corporation, Norcross, GA, USA). The sample was degassed at 350 \({}^{\circ}\)C for 4 h with a temperature ramp of 10 \({}^{\circ}\)C per minute under a vacuum of 10 mmHg. Liquid nitrogen was used to obtain a 28-point adsorption isotherm, with the total surface area calculated via the Brunauer-Emmett-Teller (BET) method and the total pore volume determined at a relative pressure of 0.995. The elemental composition of the active metals, specifically the quantification of iron and nickel content, was determined utilizing a Thermo Scientific ICAP 7200 SERIES inductively coupled plasma-optical emission spectrometer (ICP-OES). Calibration curves were meticulously constructedusing certified reference materials: a 10,000 mg/L iron standard solution of Fe(NO\({}_{3}\))\({}_{2}\) in 10% HNO\({}_{3}\) (Sigma-Aldrich) and a 1000 mg/L nickel standard solution of Ni(NO\({}_{3}\))\({}_{2}\) in 2-3% HNO\({}_{3}\) (Sigma-Aldrich). To prepare samples for analysis, a precisely measured aliquot of both fresh and spent catalyst material was subjected to a digestion process involving incubation in aqua regia at a controlled temperature of 80 \({}^{\circ}\)C for an extended period of overnight duration. This digestion procedure, coupled with vigorous agitation, ensured the complete dissolution of all metallic constituents within the catalyst matrix, thereby facilitating accurate quantification via ICP-OES. To examine the acidic properties of the catalyst, temperature-programmed desorption of ammonia (NH\({}_{3}\)-TPD) was performed using a Finesorb-3010 instrument designed for chemisorption studies (Finetec Instruments Company, Zhejiang, China). Ammonia was chosen as the test molecule because of its uncomplicated structure, small dimensions, and capability to quantify both robust and feeble acidic locations on the catalytic surface. Initially, roughly 200 mg of the newly prepared material underwent a heat treatment in a helium stream at a flow rate of 30 standard cubic centimeters per minute (sccm). This calcination process reached 600 \({}^{\circ}\)C over 30 min, with the temperature increasing at a rate of 20 \({}^{\circ}\)C/min. Subsequently, the sample's temperature was reduced to 120 \({}^{\circ}\)C to facilitate the adsorption of ammonia. This adsorption was achieved by exposing the sample to a 25 sccm flow of a mixture containing 10% ammonia in helium for a duration of 30 min. To eliminate any ammonia molecules that were merely held by weak physical forces, a helium flow of 25 sccm was maintained for 10 min at 120 \({}^{\circ}\)C. The TPD analysis involved heating the sample to 600 \({}^{\circ}\)C at a rate of 10 \({}^{\circ}\)C/min, followed by a 30 min hold at that temperature, all under a 25 sccm helium flow. A thermal conductivity detector (TCD) was employed to measure the quantity of ammonia released during the heating process.