Universitas Gadjah Mada

Developing an optimal catalyst formulation is a critical challenge in expanding sustainable ethylene production and utilization as a chemical intermediate product. Metal oxide impregnation (silver nitrate (AgNO3), cobalt nitrate (Co(NO3)2), and phosphotungstic acid (H3PW12O40)) was used to enhance the catalytic performance of HZSM-5 by increasing active sites and acidity. The preparation of the catalyst was performed by the impregnation of various metals and amounts of loading particles inside the pores of HZSM-5. The particles were impregnated by incipient wetness impregnation and followed by calcination to obtain Ag/HZSM-5, Co/HZSM-5, and W/HZSM-5 catalysts. Characterization techniques, including N2 adsorption-desorption, SEM, and XRD, were used to analyze the catalyst properties. Catalytic performance was evaluated in a packed-bed reactor under varying reaction conditions at WHSV 1.8 h-1. The aim of this research is to identify optimal catalyst formulations that exhibit superior activity in both conversion and selectivity towards ethylene production. Modified HZSM-5 catalysts incorporating Ag, Co, and W exhibited enhanced catalytic performance for bioethanol dehydration to bioethylene, attributed to optimized acidic sites, pore structure, and metal synergy. The 1%W/HZSM-5 catalyst demonstrated superior ethylene conversion (98.2%) and selectivity (99.88%) at 300 ℃. Increasing tungsten loading up to 2% impacted the conversion of bioethanol. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Perkembangan kecerdasan buatan, khususnya ChatGPT membawa perubahan dalam praktik pemasaran digital, terutama pada proses produksi konten. Penelitian ini bertujuan menganalisis penerimaan ChatGPT sebagai alat bantu pemasaran digital oleh Divisi Web Content di startup proptech Jendela360 menggunakan kerangka Technology Acceptance Model (TAM). Penelitian menggunakan pendekatan kualitatif dengan metode studi kasus. Data dikumpulkan melalui wawancara, observasi, dan dokumentasi terhadap empat informan, yaitu Web Content Manager, SEO Specialist, SEM Specialist, dan Content Writer. Hasil penelitian menunjukkan bahwa ChatGPT diterima secara positif berdasarkan dua konstruk utama TAM, yaitu perceived usefulness dan perceived ease of use. Dari sisi kegunaan, ChatGPT dinilai mampu mempercepat proses kerja, meningkatkan kinerja dan produktivitas, serta membuat pekerjaan lebih efektif, terutama pada tahap awal produksi konten. Sedangkan dari sisi kemudahan penggunaan, ChatGPT dipersepsikan mudah dipelajari, mudah dikontrol, fleksibel, dan cepat dikuasai. Namun, efektivitas penggunaannya tetap bergantung pada kemampuan pengguna dalam menyusun prompt, mengevaluasi, dan merevisi hasil dari AI.

Purpose This study aims to systematically review the development of Social Entrepreneurial Orientation (SEO) within the broader field of social entrepreneurship. Out of 970 collected articles, 117 relevant papers were selected for in-depth analysis. Design/methodology/approach Using a Systematic Literature Review combined with bibliometric and thematic content analyses, this study maps publication trends, journal quality, methodological approaches and key research areas. Through bibliometric mapping and thematic visualization, this study identifies core research streams, emerging trends and research gaps in SEO literature. Findings The analysis identifies five primary research streams: SEO as a driver of firm performance and sustainability, the relationship between SEO and organizational performance dimensions, the role of innovation in social entrepreneurship, the contribution of entrepreneurship and management practices to social innovation and the integration of strategic orientations to enhance performance. Building on these findings, this study proposes four key areas for future research: refining the conceptualization and measurement of SEO; exploring the link between SEO, social innovation and sustainability, investigating the role of digital transformation in social entrepreneurship; and examining mediation and moderation mechanisms in the SEO–performance relationship. Originality/value This study offers a clear and comprehensive overview of SEO research, providing valuable insights into its theoretical evolution and practical relevance. By systematically synthesizing the current literature and identifying research gaps, this study contributes to guiding future research and supporting the development of more robust SEO frameworks applicable across diverse social entrepreneurship contexts.