Ralph Lehnen

1.1k total citations
27 papers, 857 citations indexed

About

Ralph Lehnen is a scholar working on Biomedical Engineering, Biomaterials and Process Chemistry and Technology. According to data from OpenAlex, Ralph Lehnen has authored 27 papers receiving a total of 857 indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Biomedical Engineering, 11 papers in Biomaterials and 8 papers in Process Chemistry and Technology. Recurrent topics in Ralph Lehnen's work include Lignin and Wood Chemistry (21 papers), Carbon dioxide utilization in catalysis (8 papers) and Enzyme-mediated dye degradation (5 papers). Ralph Lehnen is often cited by papers focused on Lignin and Wood Chemistry (21 papers), Carbon dioxide utilization in catalysis (8 papers) and Enzyme-mediated dye degradation (5 papers). Ralph Lehnen collaborates with scholars based in Germany, India and United States. Ralph Lehnen's co-authors include Bodo Saake, Jacob Podschun, Horst Nimz, Ramavatar Meena, Michael Windt, Uwe Schmitt, Dietrich Meier, Hatsuo Ishida, Ron Janzon and Seishi Ohashi and has published in prestigious journals such as Carbohydrate Polymers, Journal of Chromatography A and Industrial & Engineering Chemistry Research.

In The Last Decade

Ralph Lehnen

26 papers receiving 823 citations

Peers

Countries citing papers authored by Ralph Lehnen

Since Specialization

Citations

This map shows the geographic impact of Ralph Lehnen'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 Ralph Lehnen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ralph Lehnen more than expected).

Fields of papers citing papers by Ralph Lehnen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ralph Lehnen. 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 Ralph Lehnen. The network helps show where Ralph Lehnen may publish in the future.

Co-authorship network of co-authors of Ralph Lehnen

This figure shows the co-authorship network connecting the top 25 collaborators of Ralph Lehnen. A scholar is included among the top collaborators of Ralph Lehnen 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 Ralph Lehnen. Ralph Lehnen 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

#	Work	Indexed citations
1	Synthesis and characterization of lignin-carbonate prepolymers as formaldehyde-free wood adhesives 2025 ·Industrial Crops and Products ·(unknown), (unknown), (unknown), (unknown), Ines D. Lange, (unknown), Ralph Lehnen	0
2	A novel quantitative³¹P NMR spectroscopic analysis of hydroxyl groups in lignosulfonic acids 2018 ·Analytical Methods ·(unknown), Jacob Podschun, Bodo Saake, Ralph Lehnen	23
3	Comparison of different cyclic organic carbonates in the oxyalkylation of various types of lignin 2017 ·Reactive and Functional Polymers ·(unknown), Bodo Saake, Ralph Lehnen	50
4	Oxyalkylation of lignin with propylene carbonate: Influence of reaction parameters on the ensuing bio-based polyols 2017 ·Industrial Crops and Products ·(unknown), Bodo Saake, Ralph Lehnen	46
5	Catalytic demethylation of organosolv lignin in aqueous medium using indium triflate under microwave irradiation 2017 ·Reactive and Functional Polymers ·Jacob Podschun, Bodo Saake, Ralph Lehnen	22
6	Hydroxyalkylation of xylan using propylene carbonate: comparison of products from homo- and heterogeneous synthesis by HRMAS NMR and rheology 2017 ·Cellulose ·(unknown), (unknown), Ralph Lehnen, Tatiana Budtova, Bodo Saake	3
7	Lignins from enzymatic hydrolysis and alkaline extraction of steam refined poplar wood: Utilization in lignin-phenol-formaldehyde resins 2016 ·Industrial Crops and Products ·(unknown), (unknown), Bodo Saake, Ralph Lehnen	59
8	Benzoxazines with enhanced thermal stability from phenolated organosolv lignin 2016 ·RSC Advances ·(unknown), Jacob Podschun, (unknown), Seishi Ohashi, Bodo Saake, Ralph Lehnen, Hatsuo Ishida	43
9	Phenolated Lignins as Reactive Precursors in Wood Veneer and Particleboard Adhesion 2016 ·Industrial & Engineering Chemistry Research ·Jacob Podschun, (unknown), (unknown), (unknown), Andreas Schreiber, Bodo Saake, Ralph Lehnen	40
10	Structure–Function Relationships in the Phenolation of Lignins from Different Sources 2015 ·ACS Sustainable Chemistry & Engineering ·Jacob Podschun, (unknown), Bodo Saake, Ralph Lehnen	64
11	Synthesis of lignin polyols via oxyalkylation with propylene carbonate 2014 ·Holzforschung ·(unknown), Jacob Podschun, Bodo Saake, Ralph Lehnen	59
12	Microwave-assisted synthesis of kC/Xylan/PVP-based blend hydrogel materials: physicochemical and rheological studies 2013 ·Cellulose ·Ramavatar Meena, Ralph Lehnen, Bodo Saake	17
13	Physicochemical and rheological properties of agarose/xylans composite hydrogel materials 2013 ·Polymer Composites ·Ramavatar Meena, Ralph Lehnen, Uwe Schmitt, Bodo Saake	5
14	Quantification of polypropylene (PP) in wood plastic composites (WPCs) by analytical pyrolysis (Py) and differential scanning calorimetry (DSC) 2011 ·Holzforschung ·Michael Windt, Dietrich Meier, Ralph Lehnen	20
15	Analytical methods for lignin characterization - Differential scanning calorimetry 2006 ·Cellulose Chemistry and Technology ·D.P. Koullas, Emmanuel G. Koukios, (unknown), (unknown), R.J.A. Gosselink, Cornelia Vasile, Ralph Lehnen, Bodo Saake, (unknown)	6
16	Size-exclusion chromatography of technical lignins in dimethyl sulfoxide/water and dimethylacetamide 2005 ·Journal of Chromatography A ·(unknown), (unknown), Ralph Lehnen, Bodo Saake	64
17	Isolation and fractionation of lignosulfonates by amine extraction and ultrafiltration: A comparative study 2005 ·Holzforschung ·(unknown), Bodo Saake, Ralph Lehnen	36
18	Characterization of electrolyzed magnesium spent-sulfite liquor 2005 ·Holzforschung ·(unknown), Bodo Saake, Ralph Lehnen	7
19	Impact of Pulping Conditions on FORMACELL Aspen Lignin: Investigation of Methoxyl and Ester Groups, Carbohydrates, Molar Mass and Glass Transition Temperatures 2002 ·Holzforschung ·Ralph Lehnen, Bodo Saake, Horst Nimz	11
20	Furfural and Hydroxymethylfurfural as By-Products of FORMACELL Pulping 2001 ·Holzforschung ·Ralph Lehnen, Bodo Saake, Horst Nimz	27

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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