Charles A. Mullen

7.0k total citations · 2 hit papers
112 papers, 5.8k citations indexed

About

Charles A. Mullen is a scholar working on Biomedical Engineering, Mechanical Engineering and Pollution. According to data from OpenAlex, Charles A. Mullen has authored 112 papers receiving a total of 5.8k indexed citations (citations by other indexed papers that have themselves been cited), including 99 papers in Biomedical Engineering, 19 papers in Mechanical Engineering and 12 papers in Pollution. Recurrent topics in Charles A. Mullen's work include Thermochemical Biomass Conversion Processes (88 papers), Biofuel production and bioconversion (37 papers) and Lignin and Wood Chemistry (28 papers). Charles A. Mullen is often cited by papers focused on Thermochemical Biomass Conversion Processes (88 papers), Biofuel production and bioconversion (37 papers) and Lignin and Wood Chemistry (28 papers). Charles A. Mullen collaborates with scholars based in United States, Brazil and Tanzania. Charles A. Mullen's co-authors include Akwasi A. Boateng, Neil M. Goldberg, David J. Mihalcik, Christina Dorado, Yaseen Elkasabi, Gary D. Strahan, Kevin G. Hicks, Isabel M. Lima, David A. Laird and Michel R. Gagné and has published in prestigious journals such as Journal of the American Chemical Society, Angewandte Chemie International Edition and Analytical Chemistry.

In The Last Decade

Charles A. Mullen

108 papers receiving 5.7k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Bio-oil and bio-char production from corn cobs and stover by fast pyrolysis

2009 570 citations Charles A. Mullen, Akwasi A. Boateng et al. Biomass and Bioenergy profile →
Screening acidic zeolites for catalytic fast pyrolysis of biomass and its components

2011 455 citations Charles A. Mullen, Akwasi A. Boateng et al. Journal of Analytical and Applied Pyrolysis profile →

Peers

Charles A. Mullen

POLLU

Xifeng Zhu China

Kaige Wang China

Konstantinos G. Kalogiannis Greece

Ajay K. Dalai Canada

Selhan Karagöz Türkiye

Anja Oasmaa Finland

Ronghou Liu China

Foster A. Agblevor United States

Xiao-Yan Zhao China

Xuesong Zhang China

Xifeng Zhu China

Charles A. Mullen

5.0k ×1.0

1.7k ×1.0

318 ×0.6

472 ×1.0

POLLU

644 ×1.4

Citations per year, relative to Charles A. Mullen Charles A. Mullen (= 1×) peers Xifeng Zhu

Countries citing papers authored by Charles A. Mullen

Since Specialization

Citations

This map shows the geographic impact of Charles A. Mullen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Charles A. Mullen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Charles A. Mullen more than expected).

Fields of papers citing papers by Charles A. Mullen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Charles A. Mullen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Charles A. Mullen. The network helps show where Charles A. Mullen may publish in the future.

Co-authorship network of co-authors of Charles A. Mullen

This figure shows the co-authorship network connecting the top 25 collaborators of Charles A. Mullen. A scholar is included among the top collaborators of Charles A. Mullen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Charles A. Mullen. Charles A. Mullen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Kohli, Kirtika, Ravindra Prajapati, Jaemin Kim, et al.. (2025). Maximization of Kraft lignin depolymerization using synthetic mixed oxide catalysts under microwave exposure. Industrial Crops and Products. 227. 120787–120787.

Sarker, Majher I., et al.. (2025). Thermal decomposition kinetics of dairy manure hydrochars. Journal of the Energy Institute. 120. 102088–102088. 4 indexed citations

Hornung, Ursel, et al.. (2025). Advances and challenges on hydrothermal processes for biomass conversion: Feedstock flexibility, products, and modeling approaches. Biomass and Bioenergy. 194. 107621–107621. 12 indexed citations

Orton, Kellene A., Yaseen Elkasabi, Charles A. Mullen, et al.. (2024). Recovery of value-added compounds through fast pyrolysis of apple pomace hydrochar. Journal of Analytical and Applied Pyrolysis. 185. 106868–106868. 2 indexed citations

Mullen, Charles A., et al.. (2024). Production of N–Mg doped biochars for phosphate adsorption from renewable sources. Biomass and Bioenergy. 185. 107221–107221. 10 indexed citations

Gurtler, Joshua B. & Charles A. Mullen. (2024). Inactivation of Escherichia coli O157:H7 in Dairy Manure Compost with Alkaline Walnut Hull Biochar. Journal of Food Protection. 88(2). 100438–100438.

Sarker, Majher I., et al.. (2024). Thermal treatment and densification of manure and biomass blends to produce stabilized soil amendments. Journal of Environmental Management. 373. 123594–123594. 1 indexed citations

Mullen, Charles A., Candice Ellison, & Yaseen Elkasabi. (2023). Pyrolytic Conversion of Cellulosic Pulps from “Lignin-First” Biomass Fractionation. Energies. 16(7). 3236–3236. 4 indexed citations

Elkasabi, Yaseen, Kerby C. Jones, Charles A. Mullen, Gary D. Strahan, & Victor T. Wyatt. (2023). Spinning band distillation of biomass pyrolysis oil phenolics to produce pure phenol. Separation and Purification Technology. 314. 123603–123603. 12 indexed citations

10.

Sarker, Majher I., et al.. (2023). Statistical optimization to improve N and C efficiency in biochar from model systems. Bioresource Technology Reports. 24. 101646–101646. 5 indexed citations

11.

Chagas, Bruna M. E., Christina Dorado, Michelle J. Serapiglia, et al.. (2016). Catalytic pyrolysis-GC/MS of Spirulina: Evaluation of a highly proteinaceous biomass source for production of fuels and chemicals. Fuel. 179. 124–134. 138 indexed citations

12.

Larkin, John W., Mark A. Schaffer, Yaseen Elkasabi, et al.. (2016). A Process Simulation of Guayule Biorefining, Including an Exergy Analysis. Works - Scholarship, Research, & Creative Expression (Swarthmore College). 5 indexed citations

13.

Beromi, Megan Mohadjer, et al.. (2015). Structural Analysis of Pyrolytic Lignins Isolated from Switchgrass Fast-Pyrolysis Oil. Energy & Fuels. 29(12). 8017–8026. 38 indexed citations

14.

Lee, Kyungtae, Geun Ho Gu, Charles A. Mullen, Akwasi A. Boateng, & Dionisios G. Vlachos. (2014). Guaiacol Hydrodeoxygenation Mechanism on Pt(111): Insights from Density Functional Theory and Linear Free Energy Relations. ChemSusChem. 8(2). 315–322. 113 indexed citations

15.

Boateng, Akwasi A., et al.. (2014). Bioenergy crops grown for hyperaccumulation of phosphorous in the Delmarva Peninsula and their biofuels potential. Journal of Environmental Management. 150. 39–47. 12 indexed citations

16.

Boateng, Akwasi A., et al.. (2013). Aspen Plus® and economic modeling of equine waste utilization for localized hot water heating via fast pyrolysis. Journal of Environmental Management. 128. 594–601. 20 indexed citations

17.

Boateng, Akwasi A., Charles A. Mullen, Neil M. Goldberg, et al.. (2010). Sustainable production of bioenergy and biochar from the straw of high‐biomass soybean lines via fast pyrolysis. Environmental Progress & Sustainable Energy. 29(2). 175–183. 54 indexed citations

18.

Boateng, Akwasi A., Charles A. Mullen, Neil M. Goldberg, et al.. (2009). Energy-dense liquid fuel intermediates by pyrolysis of guayule (Parthenium argentatum) shrub and bagasse. Fuel. 88(11). 2207–2215. 45 indexed citations

19.

Mullen, Charles A., Alison N. Campbell, & Michel R. Gagné. (2008). Asymmetric Oxidative Cation/Olefin Cyclization of Polyenes: Evidence for Reversible Cascade Cyclization. Angewandte Chemie International Edition. 47(32). 6011–6014. 61 indexed citations

20.

Mullen, Charles A. & Michel R. Gagné. (2007). Regioselective Oxidative Cation-Olefin Cyclization of Poly-enes: Catalyst Turnover via Hydride Abstraction. Journal of the American Chemical Society. 129(39). 11880–11881. 39 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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